Not really an answer, but it does seem to be a bug in Questions/Confluence here. I get the same, almost always on comments.
A workaround that usually works (but needs you to have answered or commented on it already, or be a power-user who can edit other people's stuff) - once you get the spinny wheel, go back up the question to a previous entry and click "edit", let that screen render, and then cancel the edit. The answer/comment option then seems to work. Sometimes, you have to use "save" rather than cancel, but most of the time cancel fixes it.
It's officially Tuesday, which means it's officially time for another tip to help you better navigate this space we call the Atlassian Community. 😄 I got a great question from community member, Sa...
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