Created attachment 671896 [details, diff]
Patch from https://github.com/OpenPrinting/cups/pull/43
Daemon crashes on (subsequent) IPP requests and needs manual restart after each print job. This makes printing virtually unusable.
The problem has already been reported on Debian  and Apple CUPS github . Seems already fixed in Fedora .
Bugfix is already merged to Open Printing CUPS repository .
Attached patch is extracted from merged pull request .
Created attachment 671899 [details]
I’m already thinking we should move to the OpenPrinting fork.