Manual "Possible duplicate of" comments are wrongly removed when question is closed
122078
Does voting to close as duplicate erase earlier comments?
38594
Don't automatically edit the post to insert "possible duplicate" links
44876
Answer appears automatically converted as a comment
149234
Stop generating "possible duplicate" comments
138642
Should the "closed as duplicate" message be altered?
104285
Vanishing close-votes when the original version of a duplicate is deleted?
101911
I do not get notified when the system adds a canned "possible duplicated" comment
116288
How can I improve questions marked as duplicate?
150539
Sorting by questions that have no answers by votes shows duplicates
14309
Collapse comments on old questions
51087
Remove votes to close question X as a duplicate of Y if question Y is closed as a duplicate of X
44674
Vote to close a deleted question - bug?
17883
Why does the question's closed status disappear when clicking to load a new edit?
105554
In the close vote review queue, when you switch to look at a duplicate question, the close button is broken
67994
References to a comment on a deleted answer can break Stack Exchange JS
10299
Circular duplicates in the close review queue?
99109
Deleted comments persist in the global inbox