diff --git a/src/lv_misc/lv_txt.c b/src/lv_misc/lv_txt.c
index c76c486e7..a29a3c158 100644
--- a/src/lv_misc/lv_txt.c
+++ b/src/lv_misc/lv_txt.c
@@ -534,6 +534,7 @@ static uint32_t lv_txt_unicode_to_utf8(uint32_t letter_uni)
  */
 static uint32_t lv_txt_utf8_conv_wc(uint32_t c)
 {
+#if LV_BIG_ENDIAN_SYSTEM == 0
     /*Swap the bytes (UTF-8 is big endian, but the MCUs are little endian)*/
     if((c & 0x80) != 0) {
         uint32_t swapped;
@@ -547,7 +548,7 @@ static uint32_t lv_txt_utf8_conv_wc(uint32_t c)
         }
         c = swapped;
     }
-
+#endif
     return c;
 }
 
diff --git a/src/lv_widgets/lv_objmask.c b/src/lv_widgets/lv_objmask.c
index e78b1227d..2c817fb17 100644
--- a/src/lv_widgets/lv_objmask.c
+++ b/src/lv_widgets/lv_objmask.c
@@ -171,6 +171,7 @@ void lv_objmask_remove_mask(lv_obj_t * objmask, lv_objmask_mask_t * mask)
     else {
         lv_mem_free(mask->param);
         _lv_ll_remove(&ext->mask_ll, mask);
+        lv_mem_free(mask);
     }
 
     lv_obj_invalidate(objmask);
diff --git a/src/lv_widgets/lv_roller.c b/src/lv_widgets/lv_roller.c
index 314735d14..9a786e25d 100644
--- a/src/lv_widgets/lv_roller.c
+++ b/src/lv_widgets/lv_roller.c
@@ -123,11 +123,16 @@ lv_obj_t * lv_roller_create(lv_obj_t * par, const lv_obj_t * copy)
     }
     /*Copy an existing roller*/
     else {
+        lv_label_create(roller, get_label(copy));
+
         lv_roller_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
         lv_roller_set_options(roller, lv_roller_get_options(copy), copy_ext->mode);
         ext->auto_fit = copy_ext->auto_fit;
         lv_obj_t * scrl = lv_page_get_scrollable(roller);
         lv_obj_set_signal_cb(scrl, lv_roller_scrl_signal);
+
+        lv_style_list_copy(&ext->style_sel, &copy_ext->style_sel);
+        lv_obj_refresh_style(roller, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("roller created");
diff --git a/src/lv_widgets/lv_textarea.c b/src/lv_widgets/lv_textarea.c
index bfdc5af26..182ac55da 100644
--- a/src/lv_widgets/lv_textarea.c
+++ b/src/lv_widgets/lv_textarea.c
@@ -231,9 +231,17 @@ void lv_textarea_add_char(lv_obj_t * ta, uint32_t c)
 
     lv_textarea_ext_t * ext = lv_obj_get_ext_attr(ta);
 
-    uint32_t letter_buf[2];
-    letter_buf[0] = c;
-    letter_buf[1] = '\0';
+    const char *letter_buf;
+
+    uint32_t u32_buf[2];
+    u32_buf[0] = c;
+    u32_buf[1] = 0;
+    
+    letter_buf = (char*)&u32_buf;
+
+#if LV_BIG_ENDIAN_SYSTEM
+    if (c != 0) while (*letter_buf == 0) ++letter_buf;
+#endif
 
     ta_insert_replace = NULL;
     lv_event_send(ta, LV_EVENT_INSERT, letter_buf);
@@ -241,7 +249,7 @@ void lv_textarea_add_char(lv_obj_t * ta, uint32_t c)
         if(ta_insert_replace[0] == '\0') return; /*Drop this text*/
 
         /*Add the replaced text directly it's different from the original*/
-        if(strcmp(ta_insert_replace, (char *)letter_buf)) {
+        if(strcmp(ta_insert_replace, letter_buf)) {
             lv_textarea_add_text(ta, ta_insert_replace);
             return;
         }
@@ -272,7 +280,7 @@ void lv_textarea_add_char(lv_obj_t * ta, uint32_t c)
         if(txt[0] == '\0') lv_obj_invalidate(ta);
     }
 
-    lv_label_ins_text(ext->label, ext->cursor.pos, (const char *)letter_buf); /*Insert the character*/
+    lv_label_ins_text(ext->label, ext->cursor.pos, letter_buf); /*Insert the character*/
     lv_textarea_clear_selection(ta);                                                /*Clear selection*/
 
     if(ext->pwd_mode != 0) {