Boundaries How Far Out Can B Go?

I made a demo to see how far out you can travel from the normal play area on an FD. Here's what I found:

• B can go for a long time before he starts to disappear into white space.
• However, if you zoom in, he reappears!
• So you can keep zooming in until you reach a point where the FD is no longer draggable.
• A bot such as L or R continues walking on an FD and isn't affected by how far out it goes.
• After only a short distance B can no longer move by tapping the block next to him.

See the screenshots I took as I moved further and further out. These were taken on a mobile phone so it might differ on a larger screen such as a tablet.