[Bug 58540] New: Using copy shortcut (Ctrl+C) does not always work on XWayland

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58540

Bug ID: 58540
           Summary: Using copy shortcut (Ctrl+C) does not always work on
                    XWayland
           Product: Wine
           Version: 10.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Wine version 10.12
Arch Linux (rolling)
KDE Plasma 6.4.3 on Wayland

When using the Ctrl+C command to copy and paste from a WINE application while
running the X11 version of WINE in XWayland, it doesn't always work. It tends
to work the first time, but subsequent copies are very flaky, and don't work.

I ran into this a lot in MusicBee, as I was copying tags a lot, but I don't
think it's specific to MusicBee, as it also occurs in WINE Notepad. It doesn't
seem to be an issue with KDE's XWayland implementation, as I can copy from
native applications running via XWayland just fine.

I have tried to allow higher keystroke permissions to X11 apps via KDE's System
Settings. This does not occur when running WINE in native Wayland, but there's
another bug in which highlighted text gets erased when clicking away.

How to reproduce:
1. Load any application that has Windows' textbox input in WINE, via XWayland
(e.g. Notepad, MusicBee).
2. Write a test sentence.
3. Copy that sentence using Ctrl+C and paste it into anything else with text
input (e.g. text editor)
4. Write a different test sentence.
5. Copy that one using Ctrl+C, but only once, and attempt to paste it into the
other application.
6. Notice that the old sentence is copied, not the new one.