Description

When using a constraint to disable collision between the constrained bodies, collisions are not ignored if the constraint is part of a streamed in sub level that does not block on load. This also occurs for AlwaysLoaded sub levels.

Steps to Reproduce

Create an actor BP with two colliding simulating bodies and a constraint between them set to disable collision.

Place an instance in a parent level and sub level.

 

Set the sub level streaming method to Blueprint, and load the level on begin play.

Result: Collision between the overlapping bodies is ignored.

 

Set the sub level streaming method to AlwaysLoaded and play.

Result: Collisions between the overlapping bodies of the sub level instance are not ignored.

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-79873 in the post.

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Fixed
ComponentUE - Simulation - Physics
Affects Versions4.204.23
Target Fix4.27
CreatedSep 5, 2019
ResolvedNov 19, 2020
UpdatedDec 2, 2020