Hey team! I am observing problems handling the mou...

# compose-desktop

[Didier Villevalois]

Hey team! I am observing problems handling the mouse wheel (which I am fairly sure wasn't happening before).

java.lang.IllegalArgumentException: Nonexistent button 5

[Didier Villevalois]

I am using Compose Multiplatform 1.9.3 with a JDK 17 on Linux/Fedora 42.

Dec 25, 2025 10:03:21 AM sun.awt.X11.XToolkit processException
WARNING: Exception on Toolkit thread
java.lang.IllegalArgumentException: Nonexistent button 5
	at java.desktop/java.awt.event.MouseEvent.<init>(MouseEvent.java:774)
	at java.desktop/sun.awt.X11.XWindow.handleButtonPressRelease(XWindow.java:743)
	at java.desktop/sun.awt.X11.XComponentPeer.handleButtonPressRelease(XComponentPeer.java:74)
	at java.desktop/sun.awt.X11.XBaseWindow.dispatchEvent(XBaseWindow.java:1148)
	at java.desktop/sun.awt.X11.XBaseWindow.dispatchToWindow(XBaseWindow.java:1120)
	at java.desktop/sun.awt.X11.XToolkit.dispatchEvent(XToolkit.java:624)
	at java.desktop/sun.awt.X11.XToolkit.run(XToolkit.java:739)
	at java.desktop/sun.awt.X11.XToolkit.run(XToolkit.java:655)
	at java.base/java.lang.Thread.run(Thread.java:840)

[Didier Villevalois]

It seems I don't have the problem with JBR-21, so I will now use that. But I am curious as to what is the problem...