Bug 423796

SUMMARY

I'm not sure if this is the correct category but here it is.

On Croatian/Slovenian keyboard (I think it's also with Spanish keyboard, probably some others from this region) the "`" symbol is on alt+7, and "~" is on alt+1. Kwin uses alt+"`" and alt+"~" for some actions by default. Here is a screenshot:
https://i.imgur.com/cyQZXGh.png


Now here is the problem, the alt+<number> shortcuts are used for Firefox and Chrome/Chromium and every other browser. When these shortcuts are not removed you can't switch to tab 1 and tab 7 on browsers while running KDE Plasma. I have decided to report this as there isn't a lot of information on internet on it and I've spent so much trying to understand what is going on. 

I didn't think it was alt+symbol shortcut, I thought it was alt+number so I tried to remap random action to alt+number and to remove it, but this only persisted until reboot and the shortcut loaded again and again it didn't work.



STEPS TO REPRODUCE
1. Install KDE Plasma and any browser (eg. Firefox) 
2. Switch to Croatian keyboard input 
3. Open 7+ tabs and try to switch to anyone of them (you shoudn't be able to switch to 1 and 7)

OBSERVED RESULT
Can't switch to tabs 1 and 7.

EXPECTED RESULT
can switch to tabs 1 and 7.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 5.19.2
(available in About System)
KDE Plasma Version: 5.19.2
KDE Frameworks Version: 5.71.0
Qt Version: 5.15.0

ADDITIONAL INFORMATION
No addition info.