Per instance vertex color data not working as expected.

Summary

Since a few weeks ago, per instance data for vertex colors/mesh painting doesn’t correctly work, and seems to wipe itself on closing and reopening a project.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

Mesh paint a fortnite native or custom mesh, close project and reopen, and per instance data is wiped.

Expected Result

Per instance data should save and not dissapear.

Observed Result

Per instance data wipes itself and mesh paint dissapears on all meshes.

Platform(s)

All

Additional Notes

This only seems to break with per instance data and not with the “Paint vertex colors” option. Mesh painting per instance saves memory, project size and duplication of the same mesh hundereds of times.

FORT-1126790 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.