That is an upstream bug for plasmashell/kwin (and for some other apps is the same). On some graphics cards plasmashell shows with an icon as if it is a regular window, so when you click on it, it acts like a regular window in the tray > minimized first click, restore to previous window size on next click.
Minimized plasma means black screen. You can try if it is better without using the intel driver and using the modesetting driver instead (just remove xf86-video-intel and reboot)