KDE Plasma 6.4.3 is out with multiple bug fixes and improvements

KDE Plasma 6.4 has received its third point release today, as scheduled. This update brings a lot of fixes across different components like the KWin window manager, the Plasma Desktop itself, and the Wayland implementation.

KWin got a significant portion of the repairs, especially for those running on Wayland. Users with high-resolution displays will be happy to hear that chaotic window resizing when using a fractional scale factor has been corrected. An odd input bug where clicks were ignored on Wayland if a tooltip was visible is also resolved.

Now, when you use a tablet with a relative dial, KWin will correctly send the delta values, and more importantly, it is guarded against a crash when handling tablet events. A memory leak in the DRM backend has also been plugged, and XWayland no longer misroutes mouse button inputs.

On the Plasma Desktop, an annoying bug with the lock screen has been squashed. Some users found that the screen would prompt for a password immediately upon locking, while for others it would not, and this update makes that behavior consistent.

For those still on the classic X11 session, the "Minimize All Windows" widget has been fixed and works as intended again. The Discover software center also feels more responsive now, with items in a list highlighting the moment you press them instead of waiting for the release.

A few other specific applications and services received some much-needed patches. As for Spectacle, a technical fix removes useLayerShell() to prevent it from breaking Qt apps launched afterward.

The KDE developers managed to resolve an issue with the Orca screen reader and repeated navigation key presses, as well as another issue where the built-in RDP server could crash from an invalid connection. Plasma 6.4.3 should begin appearing in the software repos for rolling-release distros over the next few days.

You can check out the full changelog here.

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Posted Wednesday 16 July 2025 at 1:44 pm AEST (my time).

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