Created attachment 103012 [details] screenshot When I tried plasma/wayland for the first time all fonts on the desktop looked much bigger than when I was using plasma/X11. Here is a screenshot that illustrates the problem. PS: sorry if my report is not for the right piece of software.
Qt calculates the font sizes in a different way for X11 and Wayland. There is nothing our side of the stack controls that - especially not the server component. Feel free to force the DPI in the font configuration module to get the same font size on x11 and Wayland.
Thanks for the hint! Manually setting the DPI did fix the problem. However it would be better if not setting were necessary (it is a kind of "unbreak my desktop" setting).
Tell Qt! It's outside of our control.