Shadows

I have been seeing shadows in ROBLOX, not normal shadows cast by players. The shadows look like those of players but there isn't anything casting it, they are just on the ground. I've even seen some move. Maybe it' s a lighting error. Maybe it's the lost bodys of Bloxwatchers? Maybe it's the people of a shadow world? Maybe it's the shadow of the people in a alternate dimension? Maybe it's my imagination? Maybe it's something else?

Nothing strange happens when I see it, the only strange thing is the shadows themselves, and the fact that no one else says anything about it. I have not mentioned it to anyone while playing the game but no one calls the shadows out.

If you see them too tell me in the comments.