Physics debug examples doesn't slow down time

[paweljarosz]

Describe the bug
Physics debug examples doesn't slow down time

To Reproduce
https://defold.com/examples/debug/physics/

1. Click on the example

Expected behavior
As description says - the time should be slowed down.
Also - normal vectors are not shown.

Additional context (optional)
Add any other context about the problem here.

[paweljarosz]

I'm looking into this