Is the account on the same server as you?
If it's the same server, it should be showing the complete list on both. If it's a different server it may show blank on both.
I'm not sure why they are getting totally different results!
If it's an account on a different server, it may be that Woolly is being clever and fetching the list from the different server automatically?
@FediTips After your reply, I thought I'd take a look at the release notes of #woollyapp, and indeed, it is a Woolly thing. Smart.