The main menu in 2023 versions of PyCharm CE is missing

Question

In newer versions of PyCharm (versions that include the New UI) I cannot get the Main Menu to show when using the Classic UI. I have restarted the IDE multiple times, tried multiple versions and searched StackOverflow for a solution. My OS is Arch Linux and I'm on KDE Plasma.

I have tried all of the suggestions from this post: Pycharm show toolbar, main menu missing

1. Suggestion: Press Shift twice, Navigate > Search. Type main menu, change 'show main menu in a separate toolbar to ON'

   • Result: No changes in UI

2. Suggestion: add linux.native.menu=false into Help

   • Result: the 'Help' menu is part of the Main Menu which I cannot access

3. Suggestion: make change to ui.lnf.xml

   • Result in one version of PyCharm, this had no effect.
   • In the newest version, this caused PyCharm to no longer open.

   Error: CompileCommand: exclude com/intellij/openapi/vfs/impl/FilePartNodeRoot.trieDescend bool exclude = true
   IDE is being shut down

Other things I've tried: (re)moving my JetBrains directory in .config and restarting the IDE.