Originally Posted by netllama
There aren't any current plans to support this configuration.
the described problem does not only happen, when one switches between different seperately running sessions. It is exactly the same if one logs completely out of one KDE session into KDM. One does not even get into KDM anymore. The current KDE session freezes and Reset-button is the only option. This has not been a problem before 100.14.11 and therefore I have downgraded again.