Bug in DialogEX - more important! please help me!

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Hi all
i work on a project that have 2 Pages ("Main", "Page1") and 1 DialogEX ("EditorSetting").

in "Page1" i put "Scintilla Object Plugin".
also
in "DialogEx" i put "Scintilla Object Plugin".

when i jump from "Main"page to "Page1" Scintilla work correctly.
then i came back to "Main" page and re jump to "Page1" again Scintilla work correct.

but

when i jump from "Main"page to "EditorSetting" Scintilla work correctly.
then i came back to "Main" page and re jump to "EditorSetting" again Scintilla not work correct.

i use exactly same codes.

APZ Example :

https://www.mediafire.com/file/2o8i3jda ... Editor.apz
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