I think ALTGR doesn't work in webapps because of the related bug to the Navigator (bug #1590515), as webapps use it to run their content:
Navigator: ALTGR works in address bar. ALTGR doesn't work in the body. Webapps: ALTGR would work if they had the address bar. ALTGR doesn't work in the body (all the webapp). ALTGR works in both native apps and xapps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565236 Title: AltGr not working on external keyboards To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1565236/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs