The modal pop-up Issue Detail when i click an issue on a board has suddenly stopped working (and for others on our Cloud instance), opens the detail in a sidebar which is a pain in the backside when trying to screen share to people with small screens. I've checked my Profile-->Jira Settings, there's no option to enable/disable it as I think there used to be so I'm assuming Atlassian have decided to deprecate it.
Anybody have any clues or is it just the usual Atlassian UI car crash that we're used to.