How can questions be asked without tags? This one, what happened?
The question did have one tag originally, but it was removed by an edit. Now when I try to remove all tags from a question when editing, I'm not allowed!
That is what happens when a silly developer (trying to rip out some old legacy hacks that have persisted for 4 years) makes a mistake in the way tags are composed for suggested edits; the bug has been fixed; I will now have fun repairing the damage...
all affected posts should now be fixed. To be clear: no fault here lies with the people reviewing them - they would have looked perfect on screen - it was only when applying the change that it broke.