Okay I have two fixes here. One restores the keyboard shortcut, and one shows a better error message if you go over your rate limit:
https://github.com/discourse/discourse/commit/ae15b10cf8c991ec0745a4d843ad243eafc9a4e5
https://github.com/discourse/discourse/commit/a1baf739569841c030ffd15e84045ab5c1755630