I have some problems with the new Unity beta version. In the upper-left menu as I select _my_ maps, they don't really get loaded.
On Óbuda, I only get a few loaded tiles, like this:
All the surrounding tiles are missing. On the metro/underground/U-Bahn maps I cannot even see anything really. On the M1 map I only see some catenary splines and that's it, not even the objects from the same level show up. On the M2 map I see absolutely nothing.
My other concern is that if I open a map that's in my contents folder, they usually don't load, instead they load other parts from other maps. A friend of mine works on a tram line on a completely different map, that tram line is a few kilometers away from the M1 metro line. If I load my M1 map, I don't see my map, but I do see tracks from my friend's map.
(From discord group screenshots I know that at least parts of my maps can be loaded, and also I can see Diorama/Berlin just fine, so I guess this is an issue with local, none-steam-downloaded maps)