Some splines not updating in PCG graph.

I have two PCG graphs in my world right now and just kinda using them to learn how it works. Everything seemed to be going pretty smoothly until today when I decided to created a new spline for a pathway. I expected to be able to move the points on the spline, add new points, etc. and have the static mesh update to fit the new shape.
Instead I’m getting weird behavior, like straight up not updating, only updating if I change the tag (and even then it won’t always update even if I change the tag again.) If I close and reopen UE5, sometimes it will update, and sometimes it won’t. Sometimes the tag I entered on the spline actor will just disappear.

The other splines in either of the PCG graphs behave normally. I can move/add points, etc.

I’ve deleted the spline altogether and created a new one, I’ve used different static meshes, I’ve deleted the logic in the graph and redid it from scratch, I’ve copy and pasted the logic from the working splines and just fixed the tag and mesh after (I’ve done that for splines from both PCGs)

Nothing seems to make the spline work correctly.


The node with the tag “fencepost” is working correctly. The one with the tag “stone” is not.
The logic on top is just copy pasted with the only difference being the tag, the mesh, and some transform info.

Here is the “fencepost” spline behaving normally will moving and adding points.

Here is the “stone” spline not updating.

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It seems like the fix for what I was experiencing was to select the pcg volume and add an actor tag that is the same as the spline tag. It just feels like a workaround though since I don’t know what the actual problem is. I had to create and entirely new pcg graph to work with, and the first two that are still working correctly do not need this additional tag.

Even with this bandaid solution, it’s not working 100% as expected! It seems as if it “times out.” I have to move the pcg volume around for the spline to update. All the old spline stuff I had created prior to today still function normally. I didn’t really do much beside using the cube grid to add more to the level and duplicate additional dynamic meshes in the level for more trees and rocks, so not really anything with pcg.

If anyone has any suggestions or knowledge they can share with me, I would appreciate it. It is likely user error, but maybe it’s a bug. I appreciate your time and your help!