Public bug reported: Description: On Ubuntu 24.04 (GNOME 46, Wayland session), when the Mozc input method is in Hiragana (Japanese input) mode, keyboard shortcuts that use the Super key do not work. Instead, the key is consumed by Mozc as plain text.
Steps to reproduce: 1. Log in to a GNOME Wayland session with "Japanese (Mozc)" as an input source. 2. Turn Japanese input ON (Hiragana mode) in a text field. 3. Press a Super+<letter> shortcut, e.g. Super+V (bound by the Clipboard Indicator extension) or Super+L. Expected: The shortcut is handled by GNOME Shell (e.g. the clipboard history opens / the screen locks). Actual: The letter is input as a full-width character (e.g. "ｖ"). With Japanese input OFF (direct input), the same shortcut works correctly. Cause: Mozc 2.28 does not recognize Super and other extra modifiers, so Super+V is treated as plain "v". This was fixed upstream: - google/mozc issue #853: https://github.com/google/mozc/issues/853 - google/mozc PR #1059 "Ignore Super and other modifier keys except for Alt" (merged 2024-09-17) https://github.com/google/mozc/pull/1059 Change in src/unix/ibus/key_event_handler.cc: key events with IBUS_MOD3_MASK | IBUS_MOD4_MASK | IBUS_MOD5_MASK are not handled by Mozc (return false). - Included in upstream 2.30.5618 ("Linux: Enabled switching modes with Super+Space in Wayland (#853, #1059)"). Fedora backported the same fix to mozc 2.29.5111.102-11 (Fedora 40/41/42): https://bugzilla.redhat.com/show_bug.cgi?id=2257171 Request: Please backport the upstream patch (PR #1059) to mozc 2.28.4715.102+dfsg in noble (SRU). Versions: - Ubuntu 24.04.x LTS (noble) - ibus-mozc / mozc-server 2.28.4715.102+dfsg-2.2build7 - ibus 1.5.29-2 - gnome-shell 46.0-0ubuntu6~24.04.17, libmutter-14-0 46.2-1ubuntu0.24.04.18 ** Affects: mozc (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2173495 Title: ibus-mozc: Super+<key> shortcuts are typed as text when Mozc is in Hiragana mode on Wayland (please backport upstream fix google/mozc#1059) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mozc/+bug/2173495/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
