I bumped into this issue:

if you save by mistake a question with the same alias than another one, you're shown the error, as it should be.

If you then change the alias and try to save again the question, you get the error you see in the title of this topic.

I can only hit close, then open the question again and edit it or apply some changes; you hit save and the error no longer shows up.

Why that error? Can we fix that?

Thanks.