Last week our Jira started occasionally creating issues that, after created, cannot be accessed by anyone. The issues show up in a search and appear perfectly normal. There is issue security applied, but the security is appropriate and the author (as well as myself and others) belong to the appropriate groups to access that security level. Other issues with the same security level are accessible. It almost appears random.
Once an issue is in this state, we cannot view it, edit it or perform any actions.