I just got "upgraded" to the new JIRA experience, and I'm no longer able to add comments to tickets.
Attempts to add comments result in a "Communications Breakdown" error message: "The Jira server could not be contacted. This may be a temporary glitch or the server may be down."
The advice to "Close this dialog and press refresh in your browser" didn't help. Even opting out of the new JIRA experience didn't help - I still get the same error.
Any advice on how to resolve this?