@alloc I found an bug with v18_21_31 and a17.2 b27 stable
Before the stable (a17.2 b20 experimental) I was able to set the web permissions to 2000 so everyone that's not logged in could see the map.
With the current version I can still set the permissions to 2000, but when I try logging in via the steam login, it looks like it's logging in, but once returning to the map, it shows as not logged in.
Occasionally it does show me as logged in, but once I refresh the browser, I'm logged out again.
If I change the permissions back to 1000, everything works fine and I stay logged in, even on browser refresh.
EDIT:
Just noticed some times it logs me out when permissions are set to 1000 and I refresh the browser, so it not just with the permissions set to above 1000