ID:2473584
 
Resolved
The map editor has had some updates to improve its ability to handle certain conditions like the use of BACKGROUND_LAYER.
BYOND Version:512
Operating System:Windows 7 Ultimate 64-bit
Web Browser:Chrome 74.0.3729.169
Applies to:Dream Maker
Status: Resolved (512.1471)

This issue has been resolved.
Descriptive Problem Summary:

The map editor does not handle special layering flags correctly. When working on SIDE_MAP and ISOMETRIC format maps, it's important to use BACKGROUND_LAYER, FLOAT_LAYER, and FOREGROUND_LAYER to properly construct a map.

Unfortunately, BACKGROUND_LAYER being 20,000 makes it layer on top of virtually everything else.
Lummox JR resolved issue with message:
The map editor has had some updates to improve its ability to handle certain conditions like the use of BACKGROUND_LAYER.