I made this project in Blender 2.83 originally. Now when I opened it in 2.91 and 2.92, in the viewport solid mode, the model just shows up in static like this. It's fine in material and render view though.
I tried making a new project in 2.92 then just appending the model from 2.83 project. But its still the same. So it lies in the model itself made in the old blender version. I removed all materials since I thought it would be the case, still no luck.