When creating a clothing asset, the sim works fine in every uasset viewport; and even in the main 3D viewport until I try to Play In Editor.
Once I PIE, the cloth stretches to an extreme Z location, and stays there. If I fly my character to that altitude and above, the cloth looks as expected; but even a few cm below and the cloth stays pinned at that altitude and begins to stretch again.
I tried moving my entire map and all assets within the range that the cloth sim seems to work; but that just shifts the working range by the same amount as the map. So the problem seems to have no work around. This is also a problem in UE 4.25.
The top GIF was in a large map with world origin rebasing enabled; so I decided to try it out in another smaller map with another character without world origin rebasing (bottom GIF). The issue occurs in both maps. However; in the default third person map (which is tiny) the issue doesn’t occur at all.
Is this some sort of floating point precision issue? The Z location of the landscape for both of these maps is at default height (approximately -14000cm Z).
I’ve submitted this as an official bug report as well, and I’ll be linking this thread to it as soon as Epic Staff can confirm/reproduce the issue.