Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

        I not sure about that and to me, it does not make any sense, but I
installed Plymouth and applied "debian-mac-style" theme and more recently a
"glowing variant" of the same theme. It worked well for a while, but
coincidentally it stopped to work JUST DURING THE REBOOTS and SHUTING DOWN
process right after I started to use my bluetooth keyboard (with a BT USB
dongle).
        I tried to reinstall, apply different themes, manual config edits. Even
AI help I asked for...and of course...That did not help!
        I dont have my old wired keyboard test it but I'm quite reluctant that
a bluetooth device could do that to a plymouth theme.
        I'm aware of Plymouth and NVIDIA compatibility possible issues (I'm
using the 610.43.02 peoprietary driver), but I think it should work for every
event considering that booting up it works well.
        I also failed to track down the causes by analising the journalctl but
I find out that the service is terminating suddenly but couldnt find out the
reason.

Here's the journal filtered output:

sudo journalctl -b -2 -u plymouth-reboot.service --no-pager | sed 's/^.*: //'
Starting plymouth-reboot.service - Show Plymouth Reboot Screen...
unexpectedly disconnected from boot status daemon
Started plymouth-reboot.service - Show Plymouth Reboot Screen.
Main process exited, code=dumped, status=11/SEGV
Failed with result 'core-dump'.