Created attachment 111342 [details] demonstration My summary says by itself. Watch the screencast please.
This is only visible on Wayland, right?
On X11. Fractional scaling is a missing feature on Wayland.
Ah right, you fooled me. You switch between X11 and Wayland like a weasel :)
Is that a Dolphin app on the video? - can't reproduce in Dolphin in: Plasma: 5.12.4 Apps: 17.12.3 Frameworks: 5.45.0 Qt: 5.10.1 Kernel: 4.14.34-1-MANJARO OS: Netrunner Rolling Video: Intel 4400 Driver: xf86-video-intel 1:2.99.917+823+gd9bf46e4-1 Screen: 1600x900
@Alexander Yes, it's Dolphin. This bug is not present on my system anymore. Arch Linux plasma 5.12.5 frameworks 5.45 Dolphin 18.04