URL field is out of bounds when I mark a question as a duplicate
70288
Minor alignment issue in the duplicate search bar
2512
Stack Overflow duplicated layer bug
103208
How to prevent creation of records where the value of two fields is the same?
34058
How to debug the mysterious "duplicate value found:  duplicates value on record with id: " error
31940
Add an alert when answering a question that has at least a close vote as duplicate
13649
What to do with cross-site duplicates?
78392
The div containing tags for a question doesn't reflow, causing layout issues for questions with long/many tags
99265
Does Google consider a site's markup when filtering duplicate content?
10293
How should duplicate questions be handled?
73510
"Similar questions" overlaps footer and has no background
31470
Why was this question closed as a duplicate and not as unclear what you're asking?
135709
Duplicate post notice missing the duplicate
7406
When merging questions, leave the duplicate one as a placeholder
128880
"Marked as duplicate" text doesn't make sense for questions that have no answer
155956
Does URL encoding create duplicate content?
150771
Do sort and page parameters count as duplicate content?
105704
Question closed as duplicate with  and also shown as "Possible duplicate"