Tried to restart Plasma via 'kquitapp5 plasmashell && kstart5 plasmashell' as was suggested in Reddit thread https://www.reddit.com/r/kde/comments/96aqfb/latte_dock_broken/ but with no success.
May be will be helpfull some additional records in the console during restarting: $ org.kde.plasmaquick: Applet preload policy set to 1 org.kde.plasma: Applet "org.kde.plasma.systemtray" could not be loaded. org.kde.plasma: Applet "org.kde.plasma.notifications" could not be loaded. Fontconfig error: failed reading config file Fontconfig error: failed reading config file Fontconfig error: failed reading config file Fontconfig error: failed reading config file Containment graphic object not valid Loading Calendar plugin HolidaysEventsPlugin(0x55c5bf024bf0) Loading Calendar plugin PimEventsPlugin(0x55c5bf037b10) Both point size and pixel size set. Using pixel size. Both point size and pixel size set. Using pixel size. Both point size and pixel size set. Using pixel size. trying to show an empty dialog trying to show an empty dialog trying to show an empty dialog Plasma Shell startup completed
