I was recently looking over my map for next session with my players, when I noticed that most of the monsters were not appearing. The monsters only had the name tags, but the name was missing, and you could not interact with them in any way. I checked multiple maps, but they all were broken. I tried making a new map from scratch, but that didn't solve the problem. I had not made any edits or changes to the map when the problem happened.

I'm having the same issue.

I am experiencing the same issue. Also had a bunch of stickers removed that I had previously placed.

Same, although not only the monsters' tokens but even my player characters' tokens were experiencing the same issue. It's almost like they were falling through the map. I'd guess this could be a layer issue of some sort? Also lost Stickers I placed on the map. I also found it interesting that some of the tokens were showing up on the Spectator view map (but still not all). Lastly, when my players accessed the map, they could still see everything. Only I, as the host, was experiencing this issue.