"Zoom in" broken on some Windows keyboard layouts

Operating system

Windows

Joplin version

3.1.24

Desktop version info

Joplin 3.1.24 (prod, win32)

Client ID: e1fb49ea169741e790fbff2361adf88f
Sync Version: 3
Profile Version: 47
Keychain Supported: Yes

Revision: d581264

Backup: 1.4.2

What issue do you have?

Is it correct that certain keyboard shortcuts - like zoom out, in - can not be re-assigned in Joplin's options ?
Failing to re-assign the keyboard shortcut, I tried figuring whether I can produce the relevant keycode for "zoom in" on my "Swiss German" keyboard layout. Based on the info at https://kbdlayout.info/00000409/shortcut/VK_OEM_PLUS this is not possible (for the keyboard layouts below).
I was successful to remap "zoom in" using the Microsoft "Keyboard Manager" (requiring an extra installation). Is there a better way to solve this ?

Thanks for making Joplin such a great tool!

Keyboards missing VK_OEM_PLUS:
Bulgarian (00000402)
Slovak (0000041b)
Turkish Q (0000041f)
Latvian (00000426)
Luxembourgish (0000046e)
Swiss German (00000807)
Swiss French (0000100c)
Spanish Variation (0001040a)