Opens wrong program on Kubuntu 19.10

[HieronymusCH]

KDocker 5.2 Kubuntu 19.10 KDocker opens the wrong program on a left click. I'm not sure yet, but as an example: if I click on the minimized icon for Signal, Dolphin appears. ... [edit] Probably a problem of KDE Plasma. It just happened by clicking on the notifications and it opened Signal...