To Reproduce
Steps to reproduce the behavior:
Expected behavior
delete the settings
Screenshots

Environment:
Please test whether this is happening as well with the default "Windows" theme. See Tools > Preferences > Style Theme. The location where the crash happens is suspicious for these themes.
In any case, please also attach the textfile with the whole bugreport in it (from the "save bug report" button)
Ok, thank you
Ok, the crash is not very talkative:
exception class : EAccessViolation
exception message : Access violation at address 000000006E7475D9 in module 'comctl32.dll'. Read of address 0000000000000008.
main thread ($2b):
6e7475d9 comctl32.dll
7bcc70d1 ntdll.dll NtWaitForMultipleObjects
7b058744 kernelbase.dll WaitForMultipleObjectsEx
7fd790d2 winex11.drv MsgWaitForMultipleObjectsEx
7fd791ec user32.dll GetMessageW
Please retry once, using the default "Windows" theme. Thanks!
I can't change windows default theme, too.
I have update the version to 11.1
bugreport.txt

when I delete the protable_settings.txt
and add new connection, it will works normally.
So, can I using dark theme in wine?
I just tried that on Windows 10, in portable mode, with the Windows theme and once with the Material theme. But I get no such crash. It just works here.
I just tried that on Windows 10, in portable mode, with the Windows theme and once with the Material theme. But I get no such crash. It just works here.
@ansgarbecker
This is fixed after update wine version to 6.0.0