All items grayed out in KDE GlobalMenu for first few minutes

Summary:

With the (Mac-style) GlobalMenu enabled in KDE Desktop, all entries in the standard drop-down menus (File, Edit etc.) are grayed out for several minutes after the program launches. Keyboard shortcuts still work. After a few minutes expected functionality starts.

Other GTK applications do not have this problem.

Steps to reproduce:

  1. Running KDE, add a GlobalMenu by right-clicking on the desktop, and going to Add Panel -> Application Menu Bar.
  2. Start Inkscape.
  3. Access drop-down menus.

What happened?

All options are grayed out/inactive.

See screenshot: https://imgur.com/a/zL4qrMF (also attached below)

What should have happened?

I'd expect the menus to be accessible as soon as the interface in the window itself becomes responsive, i.e. indicating that the program has fully loaded. I would not expect background tasks initiated at start-up to interfere with menu accessibility if the toolbars, keyboard shortcuts and the rest of the interface is functioning.

Sample attachments: Screenshot_20210223_134207 Screenshot is of 0.92.5, however 1.0.2 still features the bug.

Version Info:

- Inkscape Version: Occurs in both Inkscape 0.92.5 (2060ec1f9f, 2020-04-08) and 1.0.2 (1.0.2+r75+1)
- Operating System: KDE Neon 5.21 User Edition
- Operating System version: 5.21.0
- KDE Plasma: 5.21.0
- KDE Frameworks: 5.79.0