When I hit the communities list button at the bottom it shows the communities in all the instances that I have accounts regardless of the active account. I've attached a SFW example. The top communities are from lemmy.world and the bottom ones are from an account on sh.itjust.works
Oh, I understand now. Yes, I have that as well, but I considered that a feature, not a bug. But the option to toggle that behavior would definitely be a good one.