There are some system fields (comment for example) that are controlled implicitly by JIRA and should not be listed in the field configurations and screen explicitly. I don't remember if summary is one of those or not offhand, but this sounds like your database has some kind of inconsistency in it that the code isn't expecting to have to deal with.
I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...
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