Thanks for the link to this post. I was able to install the package that you gave, libwxgtk3.0-0v5, but after reinstall, I'm now having this error with Wings 2.2.5 and 2.2.6.1 :
Fatal Error: Mismatch between the program and library build versions detected.
The library used 3.0 (wchar_t,compiler with C++ ABI 1013,wx containers,compatible with 2.8 ),
and wxCore used 3.0 (wchar_t,compiler with C++ ABI 1011,wx containers,compatible with 2.8 ).
Abandon (core dumped)
I'm going to dig this, seems that lots of wx projects have troubles with Ubuntu 20.4, anyway I hope that 20.10 that will soon be released will help with that,
Fatal Error: Mismatch between the program and library build versions detected.
The library used 3.0 (wchar_t,compiler with C++ ABI 1013,wx containers,compatible with 2.8 ),
and wxCore used 3.0 (wchar_t,compiler with C++ ABI 1011,wx containers,compatible with 2.8 ).
Abandon (core dumped)
I'm going to dig this, seems that lots of wx projects have troubles with Ubuntu 20.4, anyway I hope that 20.10 that will soon be released will help with that,