I noticed that objects (items, decorations, dead enemies, etc.) do not pass through interactive sector portals. The player and alarmed enemies do this without problems, but not objects. I tried to throw them using ThrustThingZ, but it does not help.
I noticed this bug for a long time, and remembered about it again only for now. I enclose a test map to demonstrate what I mean. Tested in version 3.7.1 (modern)
Interestingly, maybe there is some way around this bug?Test Map