I confirmed the issue on level 24 but couldn't solve it. The issue appears to
only happen in games started from the Level Editor. If saved, and then loaded
from save, there seems to be no problem with the collrect updating.

This does not seem to affect the "Town-NorthGateGuard.dialog", which correctly
opens and closes the gates with no problem (even when started from the Level
Editor).

 I did find a number of things that are working correctly:
- Automap (updates correctly)
- blit_obstacle_collision_rectangle() in view.c

Puzzling. But perhaps not essential to be solved before next release, since it
only seems to occur outside of standard gameplay?