We got upgraded on our cloud instance yesterday from 5.4 to 5.7 to fix another bug. It looks like it’s introduced another bug, which thankfully is much smaller but annoying still.
The release filter on the Overview page doesn’t dropdown at all for any project. All other filters are fine.
I can see release items in the API call the dashboard is making (…api/Spaces-1/dashboard?projectId=Projects-41&showAll=true), so it must be a UI bug.