[Map Collision] Knocked player clips through curb/floor and falls to lower level

Platform: PC (STEAM)

I encountered a map collision bug during a match.

After a fight, I was knocked down and started crawling backwards. I moved backwards toward the raised edge/curb behind me.

Normally, my knocked character should have been stopped by the curb/map geometry. Instead, the character passed through the geometry and fell through the floor/edge to the lower level of the map.

Steps to reproduce:

1. Get knocked down at the location shown in the attached video.

2. While knocked, crawl backwards toward the curb/raised edge.

3. Continue moving backwards against the edge.

4. The character can pass through the map geometry and fall to the area below.

Expected result:

The curb/edge should have collision and stop the knocked player from moving backwards through it.

Actual result:

The knocked player clips through the map geometry and falls to the lower level.

I have attached a video showing the exact location and the bug occurring in-game.