Idk if this is a good place to ask, please tell me if you know a better one.
The item saved glitch seems just a bit too weird to me, and I was wondering if somebody can explain what exactly happens in it to any extent.
The main thing I'm interested in is how it persists between reloads.
From my understanding, the item save glitch is a fail safe in the event that an overly complex physics interaction takes place. When two entities collide in just the right way, the game reverts them to an simplified collision process that allows them to just pass through each other without crashing the game or making things break. It can happen in any source game, but most easily achieved in portal because of the weird nature of portal collision.
As of today, 17/03/25, ghost door is officially banned in all runs, due to it not being possible without pre run setup (if a setup is found from game launch the rules will be updated accordingly). All previous full runs utilizing it will be grandfathered in, and all previous ILs utilizing it will be
