I’m having difficulty to separate a mesh which I imported from an FBX file. Tried the usual P separate by loose parts, and all other option but it is not separating. When I’m in edit mode I can see the vertices in vertices mode but I can’t select them . I should mention that the mesh is inside a collection.
I don’t know why the vertices are showing…
but when you select an object in the scene collection…and turn off visibility for the Collection…you make the object selected invisible… Leave the Collection visible and turn off visibility to the objects…
The same thing happened to me… Did you find a solution?
Okay so the solution for me is to select the mesh with error and export it to obj then re-import again to blender. When I do that it fix the error. Hope this help. 