I'm trying to set up my laptop with freshly installed Kubuntu 20.10. Almost everything looks great except pop-up menu on toolbar (honestly, I forgot how to call it properly). My laptop has a 4k screen, so I usually set up scaling (250%) and plenty of flags in profile:
export PLASMA_USE_QT_SCALING=1 export GDK_SCALE=2 export GDK_DPI_SCALE=0.5
But the pop-up menu still has tiny icons. As I remember, last time I succeeded with setting it up properly was on Kubuntu 19.10 but I completely forgot how I accomplished that.
Issue with small icons