The problem is known and can be found here:
I did get a workaround, I've tested it and it works:
There is workaround available which is to enable and disable the JIRA Service Desk application on your cloud instance. Do note though that by using this workaround, your Free Trial for service desk will be used up. In case you have no plans to use JIRA Service Desk on this cloud instance, please do go ahead with the workaround.
Hey Community mates! Claire here from the Software Product Marketing team. We all know software development changes rapidly, and it's often tough to keep up. But from our research, we've found the h...
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