Suggest similar existing issues when typing the title for a new one

[douglaslassance]

Suggesting similar existing issues when typing the title of a new one would guard against duplication and help guide users to the right place.

[Strajk]

Example how YouTrack does this

[vict0rsch]

I think this would be particularly useful for orgs like mine who want to use Github Discussions in a Q&A / StackOverflow form. Reducing redundancy with the same kind of title-based deduplication before the discussion/issue is actually opened would be amazing

[pimterry]

As an open source maintainer, I'd find this extremely useful. Lots of people file exact (word for word!) duplicates of existing issues, and it wastes substantial amounts of my time and theirs. Everybody would win if there was an obvious prompt towards similar existing issues.

[corneliusroemer]

I wrote a detailed feature proposal here (ironically I only noticed this issue here exists after I wrote mine, case in point!): https://github.com/orgs/community/discussions/137345

Another related discussion is: https://github.com/orgs/community/discussions/18185

Gitlab does it like that: