Calling DynamicMesh methods RemoveVertex() or RemoveTriangle() breaks the DynamicMesh operation afterwards

[DukeAunarky (Aunarky)]

Beta Features / Flags Enabled:
“FFlagSimEnableDynamicMesh”
“FFlagSimEnableDynamicMeshPhase2”

Bug: When calling RemoveVertex() or RemoveTriangle() on a DynamicMesh. It would cause it to become unusable after creating a new Vertex or Triangle meanwhile the console shouts strange error messages.

When doing RemoveTriangle() then creating a new triangle:

When doing RemoveVertex() then creating a new vertex:

Repo File (You’d need to have the DynamicMesh Flags enabled):
invalidvertex.rbxl (53.9 KB)

Expected behavior

Expected Result: Removing a Vertex/Triangle then creating a new one unrelated to the deleted tris/verts.

[tnavarts]

This API is not stable yet, it’s expected that some of its functionality won’t work yet.

[monsterjunjun]

Thanks for reporting the bug. The team will be looking into it.