diff --git a/src/lv_core/lv_obj.c b/src/lv_core/lv_obj.c
index d4239de5b..6fbb450c5 100644
--- a/src/lv_core/lv_obj.c
+++ b/src/lv_core/lv_obj.c
@@ -319,6 +319,7 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, const lv_obj_t * copy)
 #endif
 
         /*Set attributes*/
+        new_obj->adv_hittest  = 0;
         new_obj->click        = 1;
         new_obj->drag         = 0;
         new_obj->drag_dir     = LV_DRAG_DIR_BOTH;
@@ -368,6 +369,7 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, const lv_obj_t * copy)
         new_obj->event_cb = copy->event_cb;
 
         /*Copy attributes*/
+        new_obj->adv_hittest  = copy->adv_hittest;
         new_obj->click        = copy->click;
         new_obj->drag         = copy->drag;
         new_obj->drag_dir     = copy->drag_dir;
diff --git a/src/lv_core/lv_refr.c b/src/lv_core/lv_refr.c
index 54c0658ba..77fd95f13 100644
--- a/src/lv_core/lv_refr.c
+++ b/src/lv_core/lv_refr.c
@@ -135,6 +135,7 @@ void lv_inv_area(lv_disp_t * disp, const lv_area_t * area_p)
             lv_area_copy(&disp->inv_areas[disp->inv_p], &scr_area);
         }
         disp->inv_p++;
+		lv_task_set_prio(disp->refr_task, LV_REFR_TASK_PRIO);
     }
 }
 
@@ -168,6 +169,11 @@ void lv_disp_refr_task(lv_task_t * task)
 
     uint32_t start = lv_tick_get();
 
+	/* Ensure the task does not run again automatically.
+     * This is done before refreshing in case refreshing invalidates something else.
+     */
+	lv_task_set_prio(task, LV_TASK_PRIO_OFF);
+
     disp_refr = task->user_data;
 
     lv_refr_join_area();
diff --git a/src/lv_core/lv_refr.h b/src/lv_core/lv_refr.h
index 8c0ed03ed..35f2791c8 100644
--- a/src/lv_core/lv_refr.h
+++ b/src/lv_core/lv_refr.h
@@ -20,6 +20,8 @@ extern "C" {
  *      DEFINES
  *********************/
 
+#define LV_REFR_TASK_PRIO LV_TASK_PRIO_MID
+
 /**********************
  *      TYPEDEFS
  **********************/
diff --git a/src/lv_hal/lv_hal_disp.c b/src/lv_hal/lv_hal_disp.c
index 11a3bbcb2..9c1b30f32 100644
--- a/src/lv_hal/lv_hal_disp.c
+++ b/src/lv_hal/lv_hal_disp.c
@@ -133,7 +133,11 @@ lv_disp_t * lv_disp_drv_register(lv_disp_drv_t * driver)
     lv_disp_t * disp_def_tmp = disp_def;
     disp_def                 = disp; /*Temporarily change the default screen to create the default screens on the
                                         new display*/
-
+    /*Create a refresh task*/
+    disp->refr_task = lv_task_create(lv_disp_refr_task, LV_DISP_DEF_REFR_PERIOD, LV_REFR_TASK_PRIO, disp);
+    LV_ASSERT_MEM(disp->refr_task);
+    if(disp->refr_task == NULL) return NULL;
+    
     disp->inv_p = 0;
 
     disp->act_scr   = lv_obj_create(NULL, NULL); /*Create a default screen on the display*/
@@ -146,11 +150,6 @@ lv_disp_t * lv_disp_drv_register(lv_disp_drv_t * driver)
 
     disp_def = disp_def_tmp; /*Revert the default display*/
 
-    /*Create a refresh task*/
-    disp->refr_task = lv_task_create(lv_disp_refr_task, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, disp);
-    LV_ASSERT_MEM(disp->refr_task);
-    if(disp->refr_task == NULL) return NULL;
-
     lv_task_ready(disp->refr_task); /*Be sure the screen will be refreshed immediately on start up*/
 
     return disp;
diff --git a/src/lv_misc/lv_anim.c b/src/lv_misc/lv_anim.c
index 197959262..c5cd53946 100644
--- a/src/lv_misc/lv_anim.c
+++ b/src/lv_misc/lv_anim.c
@@ -26,6 +26,7 @@
  *********************/
 #define LV_ANIM_RESOLUTION 1024
 #define LV_ANIM_RES_SHIFT 10
+#define LV_ANIM_TASK_PRIO LV_TASK_PRIO_MID
 
 /**********************
  *      TYPEDEFS
@@ -35,6 +36,7 @@
  *  STATIC PROTOTYPES
  **********************/
 static void anim_task(lv_task_t * param);
+static void anim_mark_list_change(void);
 static bool anim_ready_handler(lv_anim_t * a);
 
 /**********************
@@ -42,6 +44,7 @@ static bool anim_ready_handler(lv_anim_t * a);
  **********************/
 static uint32_t last_task_run;
 static bool anim_list_changed;
+static lv_task_t * _lv_anim_task;
 
 /**********************
  *      MACROS
@@ -58,7 +61,9 @@ void lv_anim_core_init(void)
 {
     lv_ll_init(&LV_GC_ROOT(_lv_anim_ll), sizeof(lv_anim_t));
     last_task_run = lv_tick_get();
-    lv_task_create(anim_task, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, NULL);
+    _lv_anim_task = lv_task_create(anim_task, LV_DISP_DEF_REFR_PERIOD, LV_ANIM_TASK_PRIO, NULL);
+	anim_mark_list_change(); /*Turn off the animation task*/
+	anim_list_changed = false; /*The list has not actaully changed*/
 }
 
 /**
@@ -102,7 +107,7 @@ void lv_anim_create(lv_anim_t * a)
 
     /* Creating an animation changed the linked list.
      * It's important if it happens in a ready callback. (see `anim_task`)*/
-    anim_list_changed = true;
+	anim_mark_list_change();
 
     LV_LOG_TRACE("animation created")
 }
@@ -127,7 +132,7 @@ bool lv_anim_del(void * var, lv_anim_exec_xcb_t exec_cb)
         if(a->var == var && (a->exec_cb == exec_cb || exec_cb == NULL)) {
             lv_ll_remove(&LV_GC_ROOT(_lv_anim_ll), a);
             lv_mem_free(a);
-            anim_list_changed = true; /*Read by `anim_task`. It need to know if a delete occurred in
+            anim_mark_list_change(); /*Read by `anim_task`. It need to know if a delete occurred in
                                          the linked list*/
             del = true;
         }
@@ -457,7 +462,8 @@ static bool anim_ready_handler(lv_anim_t * a)
         memcpy(&a_tmp, a, sizeof(lv_anim_t));
         lv_ll_remove(&LV_GC_ROOT(_lv_anim_ll), a);
         lv_mem_free(a);
-        anim_list_changed = true;
+		/*Flag that the list has changed */
+		anim_mark_list_change();
 
         /* Call the callback function at the end*/
         if(a_tmp.ready_cb != NULL) a_tmp.ready_cb(&a_tmp);
@@ -482,4 +488,12 @@ static bool anim_ready_handler(lv_anim_t * a)
 
     return anim_list_changed;
 }
+static void anim_mark_list_change(void)
+{
+	anim_list_changed = true;
+	if(lv_ll_get_head(&LV_GC_ROOT(_lv_anim_ll)) == NULL)
+		lv_task_set_prio(_lv_anim_task, LV_TASK_PRIO_OFF);
+	else
+		lv_task_set_prio(_lv_anim_task, LV_ANIM_TASK_PRIO);
+}
 #endif
diff --git a/src/lv_misc/lv_color.h b/src/lv_misc/lv_color.h
index 0dce299f8..a480d9bc5 100644
--- a/src/lv_misc/lv_color.h
+++ b/src/lv_misc/lv_color.h
@@ -528,14 +528,14 @@ static inline uint8_t lv_color_brightness(lv_color_t color)
 
 /* The most simple macro to create a color from R,G and B values */
 #if LV_COLOR_DEPTH == 1
-#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){.full = ((b8 >> 7) | (g8 >> 7) | (r8 >> 7))})
+#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){.full = (uint8_t)((b8 >> 7) | (g8 >> 7) | (r8 >> 7))})
 #elif LV_COLOR_DEPTH == 8
-#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{(b8 >> 6) & 0x3U, (g8 >> 5) & 0x7U, (r8 >> 5) & 0x7U}})
+#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{(uint8_t)((b8 >> 6) & 0x3U), (uint8_t)((g8 >> 5) & 0x7U), (uint8_t)((r8 >> 5) & 0x7U)}})
 #elif LV_COLOR_DEPTH == 16
 #if LV_COLOR_16_SWAP == 0
-#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{(b8 >> 3) & 0x1FU, (g8 >> 2) & 0x3FU, (r8 >> 3) & 0x1FU}})
+#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{(uint16_t)((b8 >> 3) & 0x1FU), (uint16_t)((g8 >> 2) & 0x3FU), (uint16_t)((r8 >> 3) & 0x1FU)}})
 #else
-#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{(g8 >> 5) & 0x7U, (r8 >> 3) & 0x1FU, (b8 >> 3) & 0x1FU, (g8 >> 2) & 0x7U}})
+#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{(uint16_t)((g8 >> 5) & 0x7U), (uint16_t)((r8 >> 3) & 0x1FU), (uint16_t)((b8 >> 3) & 0x1FU), (uint16_t)((g8 >> 2) & 0x7U)}})
 #endif
 #elif LV_COLOR_DEPTH == 32
 #define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{b8, g8, r8, 0xff}}) /*Fix 0xff alpha*/
diff --git a/src/lv_misc/lv_task.c b/src/lv_misc/lv_task.c
index 8a7bffca8..eb10e1813 100644
--- a/src/lv_misc/lv_task.c
+++ b/src/lv_misc/lv_task.c
@@ -32,6 +32,7 @@
  *  STATIC PROTOTYPES
  **********************/
 static bool lv_task_exec(lv_task_t * task);
+static uint32_t lv_task_time_remaining(lv_task_t * task);
 
 /**********************
  *  STATIC VARIABLES
@@ -39,6 +40,7 @@ static bool lv_task_exec(lv_task_t * task);
 static bool lv_task_run  = false;
 static uint8_t idle_last = 0;
 static bool task_deleted;
+static bool task_list_changed;
 static bool task_created;
 
 /**********************
@@ -56,14 +58,16 @@ void lv_task_core_init(void)
 {
     lv_ll_init(&LV_GC_ROOT(_lv_task_ll), sizeof(lv_task_t));
 
+    task_list_changed = false;
     /*Initially enable the lv_task handling*/
     lv_task_enable(true);
 }
 
 /**
  * Call it  periodically to handle lv_tasks.
+ * @return the time after which it must be called again
  */
-LV_ATTRIBUTE_TASK_HANDLER void lv_task_handler(void)
+LV_ATTRIBUTE_TASK_HANDLER uint32_t lv_task_handler(void)
 {
 
 
@@ -71,16 +75,17 @@ LV_ATTRIBUTE_TASK_HANDLER void lv_task_handler(void)
 
     /*Avoid concurrent running of the task handler*/
     static bool already_running = false;
-    if(already_running) return;
+    if(already_running) return 1;
     already_running = true;
 
     static uint32_t idle_period_start = 0;
     static uint32_t handler_start     = 0;
     static uint32_t busy_time         = 0;
+	static uint32_t time_till_next;
 
     if(lv_task_run == false) {
         already_running = false; /*Release mutex*/
-        return;
+        return 1;
     }
 
     handler_start = lv_tick_get();
@@ -149,6 +154,13 @@ LV_ATTRIBUTE_TASK_HANDLER void lv_task_handler(void)
                 break;
             }
 
+            if(task_list_changed) {
+                task_interrupter = NULL;
+                end_flag = false;
+                task_list_changed = false;
+                break;
+            }
+
             LV_GC_ROOT(_lv_task_act) = next; /*Load the next task*/
         }
     } while(!end_flag);
@@ -162,10 +174,23 @@ LV_ATTRIBUTE_TASK_HANDLER void lv_task_handler(void)
         busy_time         = 0;
         idle_period_start = lv_tick_get();
     }
-
+	
+    time_till_next = LV_NO_TASK_READY;
+    next = lv_ll_get_head(&LV_GC_ROOT(_lv_task_ll));
+    while(next) {
+        if(next->prio != LV_TASK_PRIO_OFF) {
+            uint32_t delay = lv_task_time_remaining(next);
+            if(delay < time_till_next)
+                time_till_next = delay;
+        }
+        
+        next = lv_ll_get_next(&LV_GC_ROOT(_lv_task_ll), next); /*Find the next task*/
+    }
+	
     already_running = false; /*Release the mutex*/
 
     LV_LOG_TRACE("lv_task_handler ready");
+	return time_till_next;
 }
 /**
  * Create an "empty" task. It needs to initialzed with at least
@@ -205,6 +230,7 @@ lv_task_t * lv_task_create_basic(void)
             if(new_task == NULL) return NULL;
         }
     }
+    task_list_changed = true;
 
     new_task->period  = DEF_PERIOD;
     new_task->task_cb = NULL;
@@ -261,6 +287,7 @@ void lv_task_set_cb(lv_task_t * task, lv_task_cb_t task_cb)
 void lv_task_del(lv_task_t * task)
 {
     lv_ll_remove(&LV_GC_ROOT(_lv_task_ll), task);
+    task_list_changed = true;
 
     lv_mem_free(task);
 
@@ -290,6 +317,7 @@ void lv_task_set_prio(lv_task_t * task, lv_task_prio_t prio)
     if(i == NULL) {
         lv_ll_move_before(&LV_GC_ROOT(_lv_task_ll), task, NULL);
     }
+    task_list_changed = true;
 
     task->prio = prio;
 }
@@ -363,9 +391,7 @@ static bool lv_task_exec(lv_task_t * task)
 {
     bool exec = false;
 
-    /*Execute if at least 'period' time elapsed*/
-    uint32_t elp = lv_tick_elaps(task->last_run);
-    if(elp >= task->period) {
+    if(lv_task_time_remaining(task) == 0) {
         task->last_run = lv_tick_get();
         task_deleted   = false;
         task_created   = false;
@@ -382,3 +408,17 @@ static bool lv_task_exec(lv_task_t * task)
 
     return exec;
 }
+
+/**
+ * Find out how much time remains before a task must be run.
+ * @param task pointer to lv_task
+ * @return the time remaining, or 0 if it needs to be run again
+ */
+static uint32_t lv_task_time_remaining(lv_task_t * task)
+{
+	/*Check if at least 'period' time elapsed*/
+    uint32_t elp = lv_tick_elaps(task->last_run);
+	if(elp >= task->period)
+		return 0;
+	return task->period - elp;
+}
diff --git a/src/lv_misc/lv_task.h b/src/lv_misc/lv_task.h
index a48b9c29c..a7acafdf7 100644
--- a/src/lv_misc/lv_task.h
+++ b/src/lv_misc/lv_task.h
@@ -27,6 +27,8 @@ extern "C" {
 #ifndef LV_ATTRIBUTE_TASK_HANDLER
 #define LV_ATTRIBUTE_TASK_HANDLER
 #endif
+
+#define LV_NO_TASK_READY 0xFFFFFFFF
 /**********************
  *      TYPEDEFS
  **********************/
@@ -80,8 +82,9 @@ void lv_task_core_init(void);
 
 /**
  * Call it  periodically to handle lv_tasks.
+ * @return time till it needs to be run next (in ms)
  */
-LV_ATTRIBUTE_TASK_HANDLER void lv_task_handler(void);
+LV_ATTRIBUTE_TASK_HANDLER uint32_t lv_task_handler(void);
 
 //! @endcond
 
diff --git a/src/lv_objx/lv_bar.c b/src/lv_objx/lv_bar.c
index 07db53239..078d7ce8f 100644
--- a/src/lv_objx/lv_bar.c
+++ b/src/lv_objx/lv_bar.c
@@ -518,9 +518,9 @@ static void draw_indic(lv_obj_t * bar, const lv_area_t * clip_area, lv_design_mo
         lv_coord_t anim_start_value_end_x =
             (int32_t)((int32_t)anim_length * (ext->start_value_anim.anim_end - ext->min_value)) / range;
         
-        anim_start_value_x = (((anim_start_value_end_x - anim_start_value_start_x) * ext->start_value_anim.anim_state) >> LV_BAR_ANIM_STATE_NORM);
+        anim_start_value_x = (((anim_start_value_end_x - anim_start_value_start_x) * ext->start_value_anim.anim_state) / LV_BAR_ANIM_STATE_END);
 
-        if(anim_start_value_x < 0)
+        if(anim_start_value_end_x < anim_start_value_start_x)
             anim_start_value_x += anim_start_value_start_x;
     } else
 #endif
@@ -535,9 +535,9 @@ static void draw_indic(lv_obj_t * bar, const lv_area_t * clip_area, lv_design_mo
         lv_coord_t anim_cur_value_end_x =
             (int32_t)((int32_t)anim_length * (ext->cur_value_anim.anim_end - ext->min_value)) / range;
         
-        anim_cur_value_x = (((anim_cur_value_end_x - anim_cur_value_start_x) * ext->cur_value_anim.anim_state) >> LV_BAR_ANIM_STATE_NORM);
+        anim_cur_value_x = (((anim_cur_value_end_x - anim_cur_value_start_x) * ext->cur_value_anim.anim_state) / LV_BAR_ANIM_STATE_END);
 
-        if(anim_cur_value_x < 0)
+        if(anim_cur_value_end_x < anim_cur_value_start_x)
             anim_cur_value_x += anim_cur_value_start_x;
     } else
 #endif