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Cloth Backstop Improperly Changes Scale For Animations / SkelMesh Scaled On Import

ISSUE: Backstops for Cloth improperly changes its Scale in two different situations: 1) When the SkelMesh was imported with a Uniform Scale NOT equal to 1.0 2) When the SkelMesh is playing an Animation that was imported with a Uniform Scale NOT equal to 1.0

For example, if a SkelMesh is imported with a Uniform Scale = 5.0, then the Backstops for the Cloth will be enlarged an extra 5x (see below) Reference Photo

However, even if the SkelMesh is imported with a Uniform Scale = 1.0, whenever it plays an Animation that was imported with a Uniform Scale != 1.0, the same issue occurs (see below) Reference Photo

It seems that the Backstops are receiving double whatever the Uniform Scale was set to. As you can see in the second image, the scale of the Backstops is about 1/2 that of the SkelMesh (Uniform Scale on Import was 0.5).

WORKAROUND: The only feasible workaround I've found is to re-import the SkelMesh at the improper size and to create a Physics Asset using that. It isn't pretty and wouldn't work well for any type of environmental collision. But if you're just looking for a piece of clothing to collide with your SkelMesh, then this crappy method works.

Product Version: UE 4.18
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asked Jan 31 '18 at 11:08 AM in Bug Reports

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avatar image Sean L ♦♦ STAFF Jan 31 '18 at 08:46 PM


We've recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.



avatar image aDropInTheOcean May 23 '18 at 04:22 PM

Is this officially a bug? I seem to be having issues with backstop as well. I'm on 4.18.3

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