For a consulting project, I recently had to join my laptop to an Active Directory domain at a client's workplace. Suddenly, my home computers can no longer see the computer. I found that the laptop could see shared items on my home network, though.
I went to the "Network and Sharing Center" to see if there was some setting I had to tweak and found this:
Hmmm... so I'm kinda/sorta still part of a homegroup, it sounds like. Searching for the message highlighted I found this Windows Online help topic that explains it:
So it turns out that yes, you can see other computers from the domain-joined laptop, but the other computers on the homegroup can't see the domain-joined laptop any longer. I suspect this is a security thing.