Curtain asset has a collision issue (minis can't walk through the opening)

[CamoMilly]

Describe the bug One of the curtain props (the light purple one) seems to have some collision issue that keeps minis from walking through it. If you try to walk with through, it's like you're hitting a wall and the mini either stays in place or tries to walk above it.

To Reproduce Steps to reproduce the behavior:

1. Set down the purple curtain prop
2. Try to walk a mini through it
3. Watch your passage be blocked

Screenshots/Videos/Twitch Clips

Additional context The gif has a comparison with another curtain prop; just wanted to make sure it wasn't just a general curtain thing.

[CamoMilly]

Found another asset with a similar collision issue: the "half" stone archway in CastleRuins has a similar problem, where the collision box extends beyond the asset. It's most noticeable when you clip two of them into each other to make a tighter archway; depending on how you do it, the mini can't even walk through it.