User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0 Build ID: 20180416133911 Steps to reproduce: 1. Download Nightly version 61.0a1.en-linux-x86-64 from the Mozilla site or install via firefox-trunk PPA, on Ubuntu 17.10. 2. Sign in to https://mail.google.com/mail/u/0/#inbox Actual results: None of Gmail's keyboard shortcuts work, including "c" to compose a new email, "/" to search, and shortcuts such as Ctrl+B in the Hangouts windows below merely activate Firefox's shortcuts to view the bookmarks sidebar, etc. Expected results: https://drive.google.com/drive/my-drive seems to have shortcuts working properly. For example, "j" and "k" can select folders down and up.

(In reply to imyxhuang from comment #0) > Actual results: > > None of Gmail's keyboard shortcuts work, including "c" to compose a new > email, "/" to search, and shortcuts such as Ctrl+B in the Hangouts windows > below merely activate Firefox's shortcuts to view the bookmarks sidebar, etc. Ah, I need to turn on keyboard shortcut in Gmail settings to use those shortcut keys. However, I don't reproduce about "c", "/". I reproduced only Ctrl+B on Hanguots window since it's a sub-document loaded from hangouts.google.com. Are you sure to reproduce the former issue? How about in safe mode?

Oh, I'm silly, I didn't turn on shortcut keys either. I assumed it was all of Gmail but only noticed it because of Hangouts. I think I'll close this bug and add a comment to bug 1440189 regarding Hangouts (since that should be a quick fix), unless you have a better idea to tidy this up.

No, we should add hangouts.google.com to the blacklist from this bug.

Comment on attachment 8968825 [details] Bug 1454833 - Allow to use legacy keypress event behavior in hangouts.google.com https://reviewboard.mozilla.org/r/237556/#review244550

Pushed by masayuki@d-toybox.com: https://hg.mozilla.org/integration/autoland/rev/f63f20404c55 Allow to use legacy keypress event behavior in hangouts.google.com r=smaug

Updated the site compatibility note: https://www.fxsitecompat.com/en-CA/docs/2018/non-printable-keys-will-soon-stop-firing-keypress-event/