System crashes/reboots after the screen is locked (0.13 & 0.14)

I use a Galaxy S6 (zerofltexx) but this maybe applies to some other devices too.

Everytime when either I manually lock or the phone automatically locks the screen it shuts down/crashes. I’ve already tried with turned on/off screensaver and also with disabled screen lock. It’s always the same.

I also downgraded to 0.07 but there where issues with installing apps from the /e/ “app store” and MicroG didn’t register some apps for cloud messaging. So it’s not really an alternative.

Hopefully someone has some kind of solution.
That would be great because I like the ROM overall and would actually want to continue using it.