From what I've heard, this is an ongoing issue with remote control blocks. When a drone is docked via connector, its grid vanishes in the access control menu. In my case, it adopts the name of the main grid its docked with. When I control that grid, I get the small grids remote block and its toolbar HOWEVER, when I decouple the connector, it kicks me out of the remote. At that point, I can reconnect to the remote control block as it should be in the access menu. The remote control block needs to be isolated to its own grid so this doesn't happen. Another issue, to me anyway, is I can't view the inventory of the remote device unless I'm relatively close to it. Kinda defeats the purpose of a remote mining rig methinks, being unable to check how full its cargo is. There are of course workarounds to this, I just find it inconvenient.