Merge Actors cause polygons to disappear

I’m currently getting an undesired result when merging actors. It’ll cause some polygons from the actors to disappear completely. I’ve checked with the LODs of the meshes and setting it to nothing but the complete base LOD will still have the same results.

It was not an issue before 4.17.1

Normal actors:

Merged Actors:

Hello Errorjack89,

I was unable to reproduce the issue you are experiencing. I have a few questions about your issue to help narrow down the issue you are experiencing.

  1. Can you reproduce this issue in a new project?
  2. If so, could you provide a detailed list of steps so that I can reproduce this issue on our end?
  3. Do all the meshes you are trying to combine have multiple LODs?


Hey, it seems to be rather an issue with merging the actors causing scaling issues. It seems to have already been reported here: Unreal Engine Issues and Bug Tracker (UE-48156)