If you used tele lumbridge you would go through the wall in draynor manor.
When FoG came out, you could see people who were in the waiting room
Not really sure why this happened, there were 2 doors into Fred the Farmer's house. One was open and one closed. I couldnt go through the closed door, but npcs could. (got pic of chicken halfway through.)
Not really sure how, but the guy in the pic was in the grand exchange booth, and could move around inside of it.
Jagex= phail at basic grammar
When grand exchange came out I was trying to find a way to 100% dupe instead of the "sometimes if you cancel right when it finishes" thing. And I delayed and took the "Buy" search option wherever I went. I could buy things from the ge anywhere, but couldnt talk or do any other actions. (open door, attack etc...)