I used to be able to select two references planes from separate parts and then a context menu with available mates would appear. (SW 2016) We upgraded to SW 2019 and now I don't have this menu but only when I select from parts in the assembly tree. If I select planes from parts in the view window then it's ok! I assume it's a bug but I wonder if there can be a setting for that?

What do you think? Is it a bug that only I have or it's a general thing and it's happening to everyone?

Thanks

Patrick