Logged out after Xwayland crash


More and more often I get spontaneously logged out of my account on my Librem15rev2 with PureOS. After logging back in, I find a core in my homedirectory. Investigation of the core with “gdb -c core” gives

Core was generated by `/usr/bin/Xwayland :0 -rootless -terminate -accessx -core -listen 4 -listen 5 -d’.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f209125b85b in ?? ()

I have the suspicion that this is caused by a GNOME shell extension (“dash-to-dock”), but I don’t know how to verify this.

Anybody else has similar experiences?