Created attachment 189450 [details] Issue in Plasma 6.5.5 STEPS TO REPRODUCE Drag a rubberband selection around. OBSERVED RESULT The rubberband selection lags behind the cursor, and so does its hitbox. EXPECTED RESULT The rubberband selection should have no delay. SOFTWARE/OS VERSIONS Operating System: CachyOS Linux KDE Plasma Version: 6.5.5 KDE Frameworks Version: 6.22.0 Qt Version: 6.10.2 Kernel Version: 6.18.9-2-cachyos (64-bit) Graphics Platform: Wayland Processors: 8 × 11th Gen Intel® Core™ i5-11300H @ 3.10GHz Memory: 9 GB of RAM (8.1 GB usable) Graphics Processor 1: Intel® Iris® Xe Graphics Graphics Processor 2: NVIDIA GeForce GTX 1650 Manufacturer: LENOVO Product Name: 82MG System Version: IdeaPad Gaming 3 15IHU6
Created attachment 189451 [details] This frame shows that its not just a visual issue.
Can't repro this on KDE Linux Operating System: KDE Linux 2026-02-11 KDE Plasma Version: 6.6.80 KDE Frameworks Version: 6.24.0 Qt Version: 6.10.2 Kernel Version: 6.18.7-zen1-1-zen (64-bit) Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 3600 6-Core Processor Memory: 16 GiB of RAM (15.5 GiB usable) Graphics Processor: AMD Radeon RX 6600
Similarly, cannot reproduce. Maybe there's a problem with laptops featuring both integrated and dedicated graphics cards?
I can reproduce it on master, but only if I move the mouse very fast, and only on video - it's fast enough to appear correct in the ui, but if I look at individual frames I can see it desyncing, as if the rubberband was one frame behind.