Description of problem:
If "Allow different sources for each window" is set in "Region & Language" settings and work with an xwayland app. After lock and unlock of Shell the first character typed to the app is character of Keyboard layout used when unlocking Shell.
Version-Release number of selected component (if applicable):
GNOME Shell 3.24.3
Gnome on Wayland only.
Gnome settings -> Region & Language -> Input source Options -> Allow different sources for each window is selected.
To make it clearer two layouts with different chars should be used (I use English-US and Russian layouts. 'C' and 'С' are on the same button of a keyboard, but should have different character codes, if you'll try to type any another letter you will see the bug).
Bug happens with Xwayland apps. I have noticed it using firefox, also it happens with geany, but do not happens with Gedit.
Steps to Reproduce:
1. Run Geany (or other XWayland app with text input)
2. Switch to Russian Layout
3. Type some text in the app. (In Russian Layout)
3. Lock Shell
4. Input your password, but before hit Enter or Unlock Switch to English-US Layout (if you do not already for the password inputing)
5. type some text again without switching the layout. (for instance "йцукен" (without quotes) which is the same buttons as "qwerty" in en-us layout)
(the first letter typed is letter of the layout which was selected on Lockscreen other letters are from the layout which was selected before locking screen.
Also before You start typing, layout indicator would show "en" and will switch to "ru" after first letter.)
(this happens if Gedit is used instead of Geany or if Geany is used in Gnome on X session. Also layout indicator would switch to "ru" just after Shell unlock.)
I have realized that Layout on Lockscreen switches back to one been used before screen was locked no matter if "Allow different sources for each window" is selected or not so this is not needed to reproduce the bug.
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