For close vote privilege users, the Duplicate option repeats
16219
New flagging dialog has a duplicate for duplicate
12715
Mobile: unusable Close as Duplicate dialog
80396
Can't change a dupe vote
83971
Ability to retract reopen/delete votes
10299
Circular duplicates in the close review queue?
140206
Fix the Help Center Privileges duplication
13010
What causes close votes to be annotated with "(deleted)"?
43391
prevent user creating a duplicate node title
76663
Why do votes get locked?
38594
Don't automatically edit the post to insert "possible duplicate" links
124266
Let me modify my close vote
22375
Allow another close vote after retraction
9026
"Possible duplicate" notice not removed after reopening question
17797
How about a "Vote not to close" option to counter the "Vote to close"?
44211
Duplicate notification for the same reputation event after editing question title
3578
Two kinds of Duplicate closing are too confusing - suggestion for a possible fix
123324
Duplicate dialog breaks when the identified duplicate is deleted