Try this.
Its the angle the house is on. It might be on some king of hill or something. My back door in my house and my bedroom does that too:BEDROOM: Slides openBATHROOM: Slides ClosedBACK DOOR: Slides ClosedIts not your door. Its the house.MY WORK IS DONE.
Does the door latch when it's shut? My grandparents door did that but then I disassembled the doorknob and it worked fine.
What ever happened to the answer I put out there. Was it not good?
Like I said, find some piece of wood in a wedge shape and the door will stay open.
Do you mean maintain an angle? It swings open is the problem. But my mom get's super pissed when I use objects to keep it that way, she thinks I'm trying to keep her out.
If you WERE trying to keep her out, you'd keep the door shut and locked.
Slap teh door hard. Does that work?