Internal error - wxWidgets Debug Alert

[wombat]

Hi there,

today - after many years of using CB - I've got my first error message (see attachment). This is the way how it occured:
- Open a project in CB with a few files open in the editor.
- Work with one of the open files in Notepad++ and save it.
- Switch focus to CB.

In the past CB asked to reload the files, but today the error message popped up.
Major change on my system: Win10 update to version 2004.

CB info:
Name             : Code::Blocks
Version          : 20.03-r11983
SDK Version      : 2.0.0
Scintilla Version: 3.7.5

wxWidgets Library (wxMSW port)
Version 3.1.3 (Unicode: wchar_t, debug level: 1),
compiled at Nov  1 2019 18:53:26

Runtime version of toolkit used is 10.0.

[oBFusCATed]

Is this problem reproducible every time you do these steps?

[wombat]

Sorry, not reproducible today. Yesterday the massage came everytime, even after restart of both programs.

[oBFusCATed]

If you find out the exact steps please post them, I'll be happy to dig out what is causing this problem.

[wombat]

Sorry, I cannot reproduce it anymore.