Bug: HEPs do not follow world collisions consistently

[peefTube]

Describe the bug

When a HEP passes through a portal, the expectation is that it should come out of the other end of the portal. What I'm finding is that the opposite occurs - it passes through the portal as if it's empty space in the level, and then winds up trapped on the other side of the wall the portal is placed on, or otherwise passes through the portal as if there's a portal placed right behind it.

This is gameplay-breaking behavior as it effectively renders pellets useless should a player fail a puzzle on first try.

Portal2_CommunityEdition-DX112024-12-1506-25-43-ezgif.com-resize-video.mp4

To Reproduce

1. Create a new map.
2. Add a pellet launcher to the map.
3. Ensure that there are places where the pellet can go through portals.
4. Load the map in-game and test.

Issue Map

Map File
You'll have to manually launch the pellet each time since I'm not including the custom launcher model with this.

Expected Behavior

When the pellet passes through a portal, it should come out through the other portal every time as is consistent with world collisions with all other entities.

Operating System

Windows 10