Overriding updateMatrixWorld() leads to issues

[rhuitl]

The method Object3d.updateMatrixWorld()(https://github.com/mrdoob/three.js/blob/400acd3c78c8e631087322eb1e0e9fc00a16b375/src/core/Object3D.js#L560) is overridden in

three-loader/src/point-cloud-octree.ts

Line 160 in 7db6366

updateMatrixWorld(force: boolean): void {

with a method that does not recurse into the children.

Can anyone clarify why this is done? Doesn't that break things when the world matrices of the child nodes should be updated, e.g. after changing the model matrix of the whole point cloud?

For me it does break things, it looks like most parts of the point cloud move to the new position but some points are left behind. I'm calling updateMatrixWorld(true) on the point cloud object. Inspecting the child nodes, I see that their matrixWorld has not been updated.

When I use the related method updateWorldMatrix(false, true) instead (https://github.com/mrdoob/three.js/blob/400acd3c78c8e631087322eb1e0e9fc00a16b375/src/core/Object3D.js#L594), which is not overridden, my code works as expected.