Created attachment 129370 [details] Screenshot of systemsettings at 217 DPI showing the described layout bug SUMMARY I have a laptop with a 176 DPI screen and a tablet with a 217 DPI screen. On both, the search field on the top left of the window escapes the allotted vertical layout space. On a PC with a monitor set to 109 dpi, the layout looks fine. I’m attaching a screenshot made on the tablet. STEPS TO REPRODUCE Set a rather high DPI value in the Fonts kcm. OBSERVED RESULT The height of the search text field grows substantially. This has two results: - lots of vertical white space within the input field - the input box escapes the layout’s row and overlaps with the view below it EXPECTED RESULT The input field’s size shall fit with that of the neighbouring widgets in its layout row. SOFTWARE/OS VERSIONS Linux/KDE Plasma: I’m not sure what I’m supposed to write here; the kernel version, the distro and install source? There is no “Linux/KDE Plasma” line in Systemsettings→System info. KDE Plasma Version: 5.19.0 KDE Frameworks Version: 5.70.0 Qt Version: 5.15.0
yesterday I noticed vertically bigger search field in Discover 5.19 when using display scale 125%.
Unfortunately high DPI stuff is kind of a mess. However setting a very high font DPI value without using the Qt scaling system is guaranteed to fail and leads to many issues like this. For that reason is is not supported; you should use the Qt scaling in the KScreen KCM. This actually changes the font DPI automatically, it just does other things too. You can then fine-tune the font DPI to be closer to the target value if it's still not right. Please try setting an appropriate scale factor using the KScreen KCM and let me know if the issue goes away.
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Yes I found a combination of scaling, DPI and font sizes that is satisfactory.
Great!