How to fix improper application theme?

Support Software & Applications
1

Screenshot from 2020-12-09 10-02-04
Screenshot from 2020-12-09 10-02-041430×735 205 KB

I installed codeblocks and seems like theme is not properly applied. How can i use the default theme for codeblocks without changing the System theme?

2

Well i found the solution.
I added(those in bold text)

Exec=env GTK_THEME=Adwaita codeblocks %F

to /usr/share/applications/codeblocks.desktop

3

That will be overwritten by an update.
You probably want to copy to ~/.local/share/applications and edit that.