Whenever I change the Armature tab from Pose Mode to Object Mode , or Edit Mode to Object Mode. it doesn't work. The bone is also hidden as well. I tried to fix the armature to Object Mode and Using Ctrl + H to unhide the bone, didn't work too. But the vertex still fine. And I don't know how to fix it.
If anyone can fix it or have a link with the same topic will be very helpful.
tried using blender v2.79.4