Weird changes in object mode after editing in edit mode I wanted to try and make eyes, nose etc. for my character, so I went into edit mode and started changing the head of the mesh:



After making a few changes, I went back into object mode and saw this:



I suspect it has something to do with Shape Keys, but I'm still a newbie so I'm really not sure. I had "Basis" selected in Shape Keys while making the changes, but I'm not sure that's correct. What's happening and how do I fix it? Thanks.



Edit: I was following the steps of the accepted answer of this post:

Eye socket help

Turns out it was the Knife Tool that caused my problem. I made a cut which didn't connect to a vertex, which apparently is a no-go. I still have no idea why my Shape Keys are affecting the the new vertices that I created on the face.
If you still wish to repair the model, here is how:
Tab into edit mode and select the head key under object data (The Upside down Triangle with vertices).
Hide all the other keys if they are not already.
Your object should look normal, now toggle on and off the legs key and select the affected vertices.
Once they are all selected, delete them. (X &gt; Vertices)
Hide every key except basis and select it. Now rebuild the faces. This is fairly easy with edge select and press  F.
Double check your weight painting and your all good.