My company has been using Validator in the workflow to require the Parent field when creating an issue for over a year.
However, the parent required error kept appearing yesterday out of no clue, even though the parent field was filled, so my whole organization members couldn't create any issues.
We didn't change any settings, so I rolled back the workflow and tried to set it again, but the same error occurred, which seems to be a critical bug in Jira.
Making the parent field mandatory is essential for my company to keep track of the resources. And as you may already know it can't be set as required like other custom fields do since it's a default field provided by Jira.
Does anybody have a clue on this issue?