Ah sorry maybe I posted stuff that was a little too obvious!
This is the first time I've heard of this issue, so there's not really a solution. But downloading the game should definitely circumvent the problem!
Hopefully noone else runs into this. It could be something in the new Windows 11 that doesn't mesh well with the game somehow.
Just to confirm: the buildings are loaded in right? There is no blue background and that you're just standing in the void? Does clicking the mute or language button in the top-right corner do anything?
In any case, I would definitely recommend downloading the game and saving yourself any possible frustration about trying different things to get this to work in the browser!
If more people have this same problem, I can look into reproducing it and finding a definitive fix.
Thanks for reporting the problem! Hope the game runs smoothly when downloaded and you enjoy it! :)