Ear mesh on the model's head appears darker and vertices arent showing in edit mode. I can still select the faces of the mesh but Cannot edit them when selected. All I can do is delete them I was working on the face when this happened and had the ears hidden with H after un-hiding them this happened.
Edit: I had to re-do the ears at this point with an older copy of the file I had made. Didn't set me back very far but I have encountered the problem again and I am too far in to use any backups as I have just noticed now and it happened to a bigger object. The same problem wherein vertex select mode I can not select vertices or see them.