ID:1904203
 
BYOND Version:508.1294
Operating System:Windows 8 Pro 64-bit
Web Browser:Chrome 44.0.2403.89
Applies to:Dream Daemon
Status: Open

Issue hasn't been assigned a status value.
Code
overlays[i] = foo

Expected Result
overlays[i] is set to foo

Actual Result
runtime error: cannot write to indexed value in this type of list

Workarounds
var o[] = overlays.Copy()
o[i] = foo
overlays = o
Not sure if it's intentional but it DOES say
this type of list
In response to Ishuri
Sorry, I left off the context. Lummox JR gives sample code that sets overlays[i] to an appearance, but it doesn't actually work.
Yeah, this is behavior that I didn't realize was in there, so I asked Kaiochao to post a report. I consider this a bug because it's not really desirable and it should be straightforward to fix.