Steps to reproduce:
- Go to https://en.wikipedia.beta.wmflabs.org/wiki/PreviewsWith3DImage/sandbox
- Click the first image.
- Press the left arrow key. -> The model rotates as expected.
- Press the right arrow key. -> You navigate to the next image instead of rotating back.
I don't know what's the best behavior here, it probably needs some explicit focus management to decide which element should respond to the arrow keys.