Raycasters not working on Snap!

Please fill out these questions for all feature requests and bug reports. If you're requesting a feature, please let us know why this feature is important or useful, not just what it should do.
Thanks!

  1. What browsers show this problem?
    All, to the best of my knowledge
  2. Please share an example project (if possible).
    https://snap.berkeley.edu/project?user=hekknyt&project=Decent%20Raycasting%20Demo
  3. Describes the steps to reproduce this issue.
    go to the link, or go onto any almost raycaster on Snap!
  4. What does Snap! currently do?
    Load the first few lines for a frame, then just gives up
  5. What should Snap! do instead?
    draw all the lines, per frame giving you a proper 3D effect

Is this bug a security concern?
no.