SUMMARY Text selection with shift + arrow keys on Wayland doesn't work in any KDE application when the arrow key is pressed before the shift key. The other way around, i.e. first press and hold shift, then press an arrow key, selection works. STEPS TO REPRODUCE 1. Open an application that displays editable text (Kate, KWrite, Dolphin's location bar, ... this is everywhere) 2. Press and hold an arrow key, then press shift while the cursor is running through the text. OBSERVED RESULT No text ist selected. EXPECTED RESULT All text that the curser ran over while holding the shift should be selected. SOFTWARE/OS VERSIONS Linux/KDE Plasma: openSUSE Tumbleweed 20230908 KDE Plasma Version: 5.27.7 KDE Frameworks Version: 5.109.0 Qt Version: 5.15.10 ADDITIONAL INFORMATION This is and has always been working fine on X11.
What an interesting thing to do. I've never even thought of doing that! Can confirm though.
I find this very useful and it drives me crazy when it's not working. Here is one possible use case: You want to select a couple of lines starting with the one below the cursor. Press and hold the down arrow, then press shift during the key repetition delay. Saves one keypress. :)
Fixed in 6.1.