diff --git a/docs/details/base-widget/event.rst b/docs/details/base-widget/event.rst
index 9fcbbfaff..02181edc8 100644
--- a/docs/details/base-widget/event.rst
+++ b/docs/details/base-widget/event.rst
@@ -156,6 +156,14 @@ Drawing Events
 -  :cpp:enumerator:`LV_EVENT_DRAW_POST_END`: Finishing the post draw phase (when all children are drawn)
 -  :cpp:enumerator:`LV_EVENT_DRAW_TASK_ADDED`: Adding a draw task
 
+.. attention::
+
+    In drawing-event callback functions the rendering
+    sequence has already begun, and during this period, making changes to any
+    Widget's attributes, styles, or creating/deleting  widgets is forbidden.  If you attempt to do so, 
+    LVGL will generate an assertion failure with a message 
+    indicating that invalidating an area is not allowed during rendering.
+
 Special Events
 --------------