Description:

After updating (replacing) wxgtk & wxWidgets, a window popped up when aegisub is started:

ASSERT INFO:
/build/wxwidgets/src/wxWidgets-3.2.0/src/common/sizer.cpp(2288): assert "CheckSizerFlags(!((flags) & (wxALIGN_RIGHT | wxALIGN_CENTRE_HORIZONTAL | wxALIGN_BOTTOM | wxALIGN_CENTRE_VERTICAL)))" failed in DoInsert(): wxALIGN_RIGHT | wxALIGN_CENTRE_HORIZONTAL | wxALIGN_BOTTOM | wxALIGN_CENTRE_VERTICAL will be ignored in this sizer: wxEXPAND overrides alignment flags in box sizers

DO NOT PANIC !!

If you're an end user running a program not developed by you, please ignore this message, it is harmless, and please try reporting the problem to the program developers.

You may also set WXSUPPRESS_SIZER_FLAGS_CHECK environment variable to suppress all such checks when running this program.

If you're the developer, simply remove this flag from your code to avoid getting this message. You can also call wxSizerFlags::DisableConsistencyChecks() to globally disable all such checks, but this is strongly not recommended.

BACKTRACE:
[1] wxBoxSizer::DoInsert(unsigned long, wxSizerItem*)
[2] wxEntry(int&, wchar_t**)
[3] main
[4] __libc_start_main

I followed the instruction above, just ignored the message. Then, there were more error messages appeared and the software froze.


Additional info:
* package version(s)
aegisub 3.2.2-51
wxwidgets-gtk3 3.2.0-2
* config and/or log files etc.
* link to upstream bug report, if any

Steps to reproduce:
1. install aegisub
2. start aegisub