There are a number of reasons this may occur. If you have a proxy I would check your proxy logs to see if it contains any errors. Barring that I would next reproduce the issue and do two things:
If nothing stands out to you please paste the log snippet here and we'll see what we can find.
@Jack Graves [AC] first caught our eye with his incredible breakdown of what, in his opinion, can make or break a Jira software implementation. (Read his thoughts on this thread)! In this follow...
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