Notepad/Wordpad: Extremely poor performance (freeze) on a 68 KB file

reactos-bootcd-0.4.16-dev-281-ge3c859e-x86-gcc-lin-dbg

• Open advapi32_vista.dmp file as attached to this ticket with Notepad or Wordpad
• Very long to load and render (char by char)
• Moving the dialog off screen causes a "long freeze"
• Notepad log shows the following error known from CORE-18944

err:(dll/win32/comctl32/edit.c:1248) es->text == 0 ... please report 

• Wordpad log shows the following error ("Symbol of voiced bilabial plosive"), known from CORE-19872 
• Maybe related to CORE-18590

(win32ss/gdi/ntgdi/freetype.c:7069) WARNING: WChar 0x0062 has a bitSize.cx of zero 

Problem does not occurs in Ubuntu Wine 9.22 using ReactOS's Wordpad and the same file