Photoshop :: Layer Position Moves When Switching Frames In Timeline

When creating a new layer and positioning it in the active frame, the position is sometimes wrong when returning to that frame.
 
1. create multiple frames in the timeline
2. create a layer and position it somewhere in the image
3. view another frame
4. return to the original frame and the position has changed
 
Positioning the layer again seems to work, it doesn't move by itself when moving between frames, but remains in position.