When Select a channel moves the pan to the left in Cubase 10.5

Hi, I have windows 10 and Cubase 10.5 and when I select a channel the pan moves to the Left and every time I select any channel that channel moves 2 numbers to the left.
For example if a channel is panned in the Center when I select that channel the pan moves L2 and when I selected again it goes L4… and so on and so on…
How can I fix that???
Please help!

It also reduces the volume of that channel… Is there someone I could talk to solve this painful problem!
Someone is having the same issue???