I just updated Leap from 15.0 to 15.1

everything seems to be fine, at least what I checked in the short time, but there is a problem with KDE

huge font in windows title bar
huge font in desktop icon name
huge font in kde menu

it seems, everything Plasma has gigantic fonts, and I do not know how to configure them

kcmshell5 fonts is simply ignored

what can I do ?