Does the ROZ layer use the same flags as the normal tilemap layers? If so, are they disabling the wrap scroll enable flag when the images are rotated in?
Sync up to the latest code in MESS, I've fixed the wrapping issue that was present in the videos. It looks very much like the ROZ layer uses pretty much the same flags as the normal tilemap layers, I was able to fix a bug by making it determine the ROZ tilemap dimensions in the same way as regular tilemaps.
