As those who regularily attend the chat may know, new questions posted on Unix & Linux tagged ubuntu are "featured" in the room by Ubuntu Questions on U&L shortly after they've been posted.
The problem is that the bot doesn't cater for already deleted questions (and this is a problem expecially for spam / rude or abusive questions).
For instance, thisthis spam question was featured after it was deleted:
Should Ubuntu Questions on U&L be smarter about deleted questions?