Ordinarily, when a review queue is emptied, a "This queue has been cleared!" message will appear, instructing the user to navigate to the other queues if they wished to continue reviewing.
Recently, though, I've noticed that all I see is a blank space (taken from Meta SE's currently empty suggested edits queue):
I also receive a console error:
Failed to load resource: the server responded with a status of 404 () /posts/undefined/votes?_=1631039719216
This problem applies to all review queues that I have access to across the network. It also seems to happen when trying to display the message received when you hit your daily review limit.
It seems a recent change has caused this problem. Could this be fixed?