We are testing a migration from JIRA 6.4 to JIRA 7.1, scriptrunner 3.1.4 to 4.3.1
When editing an issue, we get very often the message ("Please wait a moment for the server to finish then retry your action").
I have the impression 
that
- the message is displayed (often but not systematically ?) when modifying a field for which a "Behaviour's" validation (groovy script) should run, and that field did not loose focus.
- the message is not (never ???) displayed if such field looses focus (press the <tab> key after editing the field)
- the message is not (never ???) displayed for a field that does not have a "Behaviour's" validation
No errors/warnings in log files.
When trying to save a second time, it goes fine (because the field loosed focus ???)
