Bug 461014

SUMMARY
***
Hi all,

I'm on Pop OS (Ubuntu) 22.04 and starting the Krita 5.1.1 latest stable appimage results in an instant "segmentation fault" even before the splash screen, here's the terminal output:
```
[1] 74695 segmentation fault (core dumped)  ./krita-5.1.1-5bf85ff1936-x86_64.appimage
```

I'm pretty sure this is a config issue related to my window manager as I've tested on these 3 wm's:
- awesomewm: instant crash
- i3: instant crash
- Cosmos (Pop OS WM): no issue at all! Which proves that all necessary packages are installed on this machine.

I've searched for this segmentation fault output error and found this 2019 thread about a missing LC_LOCALE envvar as the culprit. My locale is fine though, as can be seen here:
```
$ locale
LANG=en_US.UTF-8
LANGUAGE=en_US:en
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=en_US.UTF-8
```

I also tried to analyse all envvars by comparing the output of "env" on awesomewm vs. Cosmos, but I couldn't find any variable that seemed to be related to that.

I also tried multiple versions of Krita over some months (5.0.1, 5.0.4, 5.0.7, 5.1.1) but all of them have the same issue on my machine.

I also tried flatpak (5.1.1), which behaves pretty much the same, but the output is a bit different:
```
$ flatpak run org.kde.krita
QIBusPlatformInputContext: invalid portal bus.
Qt: Session management error: Could not open network socket
QIBusPlatformInputContext: invalid portal bus.
Qt: Session management error: Could not open network socket
QIBusPlatformInputContext: invalid portal bus.
Qt: Session management error: Could not open network socket
QIBusPlatformInputContext: invalid portal bus.
Qt: Session management error: Could not open network socket
```
After that it ends silently with a "SEGV" error code. 
Cosmos runs the flatpak version just fine, just as the appimage.


What might be responsible for the segmentation fault on awesomewm?