ADDITIONAL SYSTEM INFORMATION :
OS: Arch Linux
Desktop Environment: KDE Plasma 6.2 (dev build, not yet released)
JRE: 22.0.2.u9

A DESCRIPTION OF THE PROBLEM :
In the upcoming KDE Plasma 6.2 release, the window manager `kwin` has a change in when `ConfigureNotify` is sent:
https://invent.kde.org/plasma/kwin/-/commit/7b486e215d44bbd9fdeb8f1180c76fb16ec6a311

The above change conforms to ICCCM, but it breaks Java apps using Swing: after maximizing the app window, in popup menus, the app considers the mouse cursor to be at a different position than it visually is, as if the app window is in the position before maximizing.

We suspect this is caused by AWT special-casing `ConfigureNotify` behavior on a WM whitelist:
https://github.com/openjdk/jdk/blob/88ccbb60919e4523064b0da17184eedcd9efa087/src/java.desktop/unix/classes/sun/awt/X11/XWindowPeer.java#L772
And `kwin` is not in the list. Making `kwin` disguise as `mutter` fixes the problem, which confirms the theory.

So can you remove the whitelist and make it "the default for every case" as in comments in the above code, or add `kwin` to the list?

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Start KDE Plasma 6.2-dev.
2. Start the Java app `jdownloader2`, unmaximized.
3. Move the app window to the screen center.
4. Maximize the app window.
5. Right click to show the popup menu.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Mouse works alright in the menu.
ACTUAL -
Mouse is considered to be to the top-left of its actual position.

FREQUENCY : always