Hi, check this

Can not see the words properly.
*v5.20.124.2713 *
I can not reproduce your problem, need more details and workflow description...
Hi, on windows 7 x64 with anyone syntax

With notepad 2 fork is working the auto-complete

Seems to be a problen on Win7 (Win10) works fine.
Question: have you tried with a Notepad3Portable BETA --> "Out-of-the-Box" ? 馃
Feel free to test the BETA version "Notepad3Portable_5.20.127.2715_BETA.paf.exe.7z" or higher.
See "Notepad3 BETA-channel access #1129" or here Notepad3Portable_5.20.127.2715_BETA.paf.exe.7z.
Note: "Notepad3Portable BETA" can be used in "2 flavors" (with or without the extension ".7z").
Your comments and suggestions are always welcome... 馃槂
@hpwamr Sorry but do not understand what mean "Out-of-the-Box"; maybe without portable ? (just the exe?) (the English is not my language) (if that: yes)
with last beta the problem persist.
PS: are there any documentation with changelog for the betas ? be nice know what change.
Current beta(s) have this problem ... (maybe Scintilla 4.3.0 update) ...
@hpwamr Sorry but do not understand what mean "Out-of-the-Box"; maybe without portable ? (just the exe?) (the English is not my language) (if that: yes)
Out-of-the-Box (Fuera de la caja): es una expresi贸n usada para decir aqu铆, la versi贸n "Beta" instalada en "versi贸n port谩til" sin ninguna otra configuraci贸n que en este caso "Auto completar palabras" 馃摝
PS: are there any documentation with changelog for the betas ? be nice know what change.
See the file Changes.txt :
@hpwamr Ok. si, tambien lo probe.
@RaiKoHoff Right, the problem is only in the beta(s). With last release, the auto-complete, work fine.
@hpwamr : could you please test a beta-version before Scintilla 4.3.0 update with AutoCompletion on Win7?
@hpwamr : could you please test a beta-version before Scintilla 4.3.0 update with
AutoCompletionon Win7?
Hello @RaiKoHoff, It will not be easy because I no longer have Win7 at home? 馃槦
I will try to find an old PC/Laptop with Win7, not sure?
@hpwamr : Maybe a Virtual Machine (VM) ?
I will have access to a Windows 7 machine tomorrow, will test then.
@RaiKoHoff
With v5.20.117.2710 -> Scintillia 4.2.3 the autocomplete work.
With v5.20.117.2711 -> Scintillia 4.3.0 the autocomplete NOT work.
I concur with @Mitezuss.
Testing with Windows 7 Pro x86...
Build 2710 works:

Builds 2711-2715 do this:

Build 2716 does this:

ac.lb->SetColour(vs.styles[STYLE_DEFAULT].fore, vs.styles[STYLE_DEFAULT].back); is missing from void ScintillaBase::AutoCompleteStart(Sci::Position lenEntered, const char *list).
related changes:
https://sourceforge.net/p/scintilla/feature-requests/1284/
https://sourceforge.net/p/scintilla/feature-requests/1283/
expected appearance (made by Notepad2 with WS_BORDER in ac-frame.png on https://sourceforge.net/p/scintilla/feature-requests/1284/):

Win7 with WS_THICKFRAME is nice xd
Thanks to @zufuliu .
Feel free to test the BETA version "Notepad3Portable_5.20.130.2719_BETA.paf.exe.7z" or higher.
See "Notepad3 BETA-channel access #1129" or here Notepad3Portable_5.20.130.2719_BETA.paf.exe.7z.