Miscellaneous compatibility options → Enable extra typographic characters — solved my problem.
The question is: why 3rd level needs enable extra characters, but Compose need not? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1448387 Title: 3rd level key chooser does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448387/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
