[Fedora-i18n-bugs] [Bug 1938251] New: update_preedit_text_with_mode(..., .., ..., IBus.PreeditFocusMode.COMMIT) doesn’t work in Gnome Wayland (works fine in Gnome Xorg)

https://bugzilla.redhat.com/show_bug.cgi?id=1938251

Bug ID: 1938251
           Summary: update_preedit_text_with_mode(..., .., ...,
                    IBus.PreeditFocusMode.COMMIT) doesn’t  work in Gnome
                    Wayland (works fine in Gnome Xorg)
           Product: Fedora
           Version: 34
            Status: NEW
         Component: ibus
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail],
                    [e-mail], [e-mail]
  Target Milestone: ---
    Classification: Fedora

I installed Fedora-Workstation-Live-x86_64-34-20210308.n.0.iso into qemu.

Add the ibus-typing-booster input method in the Gnome control center and
also add the “Vietnamese (telex (m17n))” input method from ibus-m17n.

Both input methods use

update_preedit_text_with_mode(..., .., ..., IBus.PreeditFocusMode.COMMIT)

and this problem can be reproduced with either of them.

Open a gedit and a gnome-terminal.

Select ibus-typing-booster in the Gnome panel and type “test”.
The word “test” is underlined, indicating that it is in preedit and not yet
committed to gedit.

Now click on gnome-terminal to change the focus to gnome-terminal.

The string “test” vanishes from gedit. It should *not* vanish, it should
be committed i.e. the underline under “test” should vanish and the string
“test” should be in gedit.

Same problem with the Vietnamese (telex (m17n)) input method.

Select it in the Gnome panel.

Type “a” into gedit.  The “a” is underlined because it is in preedit.
Click on gnome-terminal to change the focus to gnome-terminal.
The “a” vanishes. Here as well the “a” should be commited to gedit, i.e.
the underline should disappear and the “a” should remain in gedit.