I have recently updated my system which apparently broke global clipboard functionality.
After reading the docs, I have checked the log file at /var/log/qubes/guid.domain_id.log which adds this line whenever ctrl + shift + v is being pressed:
connect: No such file or directory
I have repeated with debug mode enabled on the vm, however no extra information was added to that file.
The issue first emerged when I installed a few packages from testing repository. But still want to debug this further, any ideas on where to look at?