This issue appears to have similarities to the post by “bucketSentry”.
I joined my GM’s game tonight. Shortly after he placed my character token on the map and I refreshed the page, I was no longer able to view the map. The map itself was replaced with a solid grey block. Weirdly, when I initially was loading the page, I partially saw the map textures before it turned grey. See attached screenshots from the video I took.
This issue appears tied to player accounts. I tried viewing the campaign map as a player on three separate browsers and two different computers.
The GM gave me GM access to my account. I was able to load the map then. We then added a test account to the campaign. I used that test account and couldn’t load the map. The map at the time had 48-49 “textures.”
We will be testing a smaller map size to see if this issue persists. I will edit this post when we do so.