ID:2374534
 
Resolved
BOTTOM didn't work correctly for screen_loc in some cases, showing the icon in the wrong location.
BYOND Version:512.1426
Operating System:Windows 7 Ultimate 64-bit
Web Browser:Chrome 66.0.3359.181
Applies to:Dream Seeker
Status: Resolved (512.1427)

This issue has been resolved.
Descriptive Problem Summary:

In certain cases, objects set with a screen_loc value of BOTTOM do not appear to show up in the correct locations as expected.

Demo of the problem in action:

http://files.byondhome.com/Ter13/screenlocbug_src.zip
Doh! I'm on the case.
I actually didn't think this was a bug to be honest but I ran into this exact same problem myself. haha
Lummox JR resolved issue with message:
BOTTOM didn't work correctly for screen_loc in some cases, showing the icon in the wrong location.