**Describe the bug** A clear and concise description of what the bug is. **To Reproduce** Steps to reproduce the behavior: 1. Go to Whiteboard 2. Create Jupyter Cell with SageMath kernel 3. Type "var('x y') plot3d(sin(x^2 + y^2), (x, -3, 3), (y, -3, 3), mesh=True)" and run the cell. 4. Interact with the plot. **Expected behavior** I expect the plot to be stable (whether it moves or not), it should not pop over randomly across the screen. **Screenshots** 