We decided to wait before going Jira v8. Veeeery carefully upgraded to 7.13.1, upgraded add-ons to last version supporting 7.13.1 - all without any problems.
Then - feeling unusually lucky - i ventured to upgrade Jira Service Desk to last version 4.0.2, after carefully verifying that it supported Jira 7.13.1.
BAAAD idea!
Jira Service desk "decided" (sorry for anthropomorphism) to sneek Jira Core v8 in through the back-door....
Now Automation is dead. Exalate malfunctions. Dashboard gadgets are missing - plus the headaches I didn't even notice so far!
"We are NOT happy"!