I've noticed lights turn off while a cart contraption is moving. I'm not sure if this is feasible to change or not, but it would be nice if it could be looked at. Other interactables on a moving contraption would also be nice, if possible.

Are you on the latest version of Create? Is flywheel enabled?

This is already a feature as I recall. (When Flywheel enabled)

This issue is fixed with flywheel for 1.16.15.