So, the bug with Set Start and End on Spline Meshes not setting collision in Construction Scripts WAS fixed, which is great.
But as of 4.10, hitting a Set Start and End on Spline Meshes at RUNTIME will not update the collision. If your spline mesh asset has a simple collision shape (not set to use complex) you can actually see this with the show collision flag enabled in-editor. Though the meshes DO deform properly, the collision shapes are left behind.
I’m having this same problem. Any thoughts perhaps on work-arounds or maybe an estimate for when it will be fixed? Or is there a way for me to actually track JIRA UE-8565?
Just FYI, the feature request UE-8565 to Support runtime generation of spline mesh collision on platforms that have runtime physx cooking enabled has been implemented in Perforce CL-2937854 by accepting pull request 2064. This change should make it to GitHub the next time the perforce stream it was added in is merged to main, and we plan to include that change in the 4.12 release.