Bug in prelude level 0-2

[Damn Daniel]

This bug is on the last room of the level, the one with the red door. If you enter it by the sewage system (entering that sewage where the door of the secret level is, on the right) you can enter and leave that room just fine. However, if you activate the trigger that spawns the enemies, there is an invisible wall blocking the sewage system, but only the center of it. You can still go through it just fine by the sides. I've recorded it.
https://youtu.be/GR6QUombGtk
Also, sometimes if you beat the secret encounter, leave, activate another room with enemies, leave throught the sewage system and enter the room of the secret encounter again, the game locks you inside. It's pretty inconsistent and should be fixed by fixing the invisible wall bug though.