since Kstars is the client and it is up to the client to display properties it is likely the client that makes things like that.
This is why I use sometimes CDC to check if behavior is the same as in Kstars.
I just compiled Kstars Version 3.5.7 Beta Build: 2021-12-05T21:27:06Z and the bug is closed
It seems someone try to use Bluetooth as the main connection between OnStep and Computer.
Obviously it does not work correctly.
Does somebody use Bluetooth with success?
Have a look on this issue github.com/indilib/indi/issues/1579