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Comment threads remain active even if all comments are deleted
In this answer there's a "General comments" thread, but all the comments are deleted.
This is related to - but IMO not the same as - this other post, in which it's discussed if showing that some comments are deleted is useful or not. That discussion is focused on the case where there are still some comments in the thread, but in this specific case, all the comments are gone, and I'm really not sure if the thread should remain active.
Maybe if someone wants to add a comment related to the same subject (considering that the thread has a meaningful title), keeping the thread active would make sense.
On the other hand, why not remove the thread in this case? If someone wants to add anything, just create another thread. Not sure if keeping the thread active will bring any benefits.
I've just found another case. Didn't search for more, though.
As a side note, I've added a comment to that thread and it worked (I've deleted it, as it was only a test).
But now, in the answer it says that there are 3 comments:
And in the thread page, it says there are 4: