Steps:
- Go an article with a 3D object (Tested on https://commons.wikimedia.beta.wmflabs.org/wiki/3d)
- Click on the 3D object
- Click on the fullscreen expand control
- Rotate/zoom the object a bit
- Exit fullscreen by clicking the reduce control
Expected Result:
The mediaviewer returns to window size and the controls remain onscreen.
Actual Result:
After a second or two the controls disappear and the user must click back to exit mediaviewer.