Track Visibility/Zone setting are not always kept after restarting a project

Hi everybody,
I did a search around but I didn’t find what I’m searching for: if I set “sync project and mix console” both in mixer window and in project window it runs ok, and I put my tracks where I want (input > left, outputs and groups > right, tracks > center) but I often lose my visibility/zones setting when I restart a project… Is this a known issue?
I’m using Cubase 11.5 pro on OS Mojave…