@joekamprad just for your information. I did a reinstall out of kicks and left me with only one language and keyboard layout. But I only had the de_CH utf charset activated thinking I don’t need the legacy. Happens to be that both the UTF and ISO charset need to be activated. Still a logoff and logon is needed to be able to select another keyboard.
EDIT: no. after logoff logon in a German interface there is still only one keyboard in Input sources. Btw the whole user interface is a mix of german and enlish now.
(clicking on the picture button does not include the picture here)