Hey guys! Just a little discovery I found! (Made by me).
I was playing around with pistons, (like always), and for some reason I had a glass pane in my inventory.
I placed the glass pane by accident and realized something, you cannot walk through glass planes when they are
diagonal, but when you put glass planes NEXT to those, it creates a little passage way. It's kind of hard to
explain so if this didn't help, download the map. It will be easier to understand once you see what I mean.
This door is cool because for some reason, mobs don't think they can run through them. AND! It traps you so you got to be quick when running through if your using a pressure pad! There is so much kinds of things you can do with this, so please diamond, comment, and favorite if you like the discovery :)