This works well when you play the map normally, and it's awesome o/. Thanks a lot for that, perfect timing for my next map .
However, i just want to report a simple bug and easily reproducible: When you try to open a map in the Map Editor which has embedding item(s) with custom material(s), these custom materials won't work and will display a red texture. Only if you don't have the custom mat locally ofc. If you're the creator of them, it'll be fine.
Have a nice one,