We're observing this very odd issue where certain users can not, for a certain period of time, link issues. Symptoms seem to appear and disappear at random times.
At first, I thought we were seeing this https://answers.atlassian.com/questions/157332/can-t-link-issues-in-project-despite-having-permission - but really the error message is different, and the linked issues field is emptied. We get this message: "You must specify a JIRA issue to link to", which is the same as if you enter no issue indeed. And while inspecting the POST request that's sent when we try to confirm the "link" dialog, we indeed see that, for some reason, the issueLinkIDs parameter isn't passed in the POST request.
Unfortunately, we have no idea how to reproduce this at the moment. Logging out, clearing caches, logging back in, doesn't seem to help.
I don't believe it's a permission issues, since the same user is able to link "sometimes" (same issues being linked). We also tried with different browsers, and that's not it either (fails with both when it fails, works with both when it works).
Nothing seems to show up in the Jira logs when this happens.
We're using 5.2.5
We'll be happy to try anything you can think of to track this down ! Any clue ?
Cheers,
