In general, whenever reporting issues like this you should include your operating system, and the versions of R and R studio you are running.
Also, some additional debugging advice. Try to isolate the problem as much as possible.
It happens in R Studio, great... Where in R Studio? Check:
- Console
- Terminal
- Source Editor
- Searching the Help tab
- If you make a New Project, in the text box where it asks for a Directory Name, does it happen there too?
- Is it all the keys or just some of them? Test, if not all of them, several.
- You tried rebooting, what about another user account? Create a new user, log out and log in with the new account and try again.
I have absolutely zero idea why you would get repeated keys only in R Studio, but all of these things might help someone who would have an idea know what the right answer for you is.
Last thing I am going to suggest because I just learned about it yesterday and it appears to solve all the things R Studio IDE related.
From @andresrcs