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 Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1565236 Title: AltGr not working on external keyboards Status in Canonical System Image: Fix Released Status in Mir: Incomplete Status in mir package in Ubuntu: Confirmed Status in ubuntu-system-settings package in Ubuntu: Invalid Status in unity8 package in Ubuntu: Fix Released Bug description: Using my keyboard with Spanish layout: - PC: Everything works perfect. - Ubuntu Touch: I can't write accented characters (dead acute, áéíóú). Extra info: - Keyboard: https://goo.gl/photos/xZUE8kRsReW1VKPA6 (http://www.logitech.com/en-hk/product/wireless-touch-keyboard-k400r2) - Ubuntu Desktop: 12.04 - Ubuntu Touch: bq Aquaris E4.5 15.04 (r305) To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1565236/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp