I've noticed a bug with the player sensing ability of doors created via the door factory where the door doesn't sense the player. But it only happens if the door is placed facing a certain direction and only from one face of the door.

It's a little hard to describe but to see what I mean, create a 3x3 block hollow cuboid with doors in the center of each face then approach all the doors from the outside. One of those doors won't sense you when approached.

I found this is an issue when these sorts of doors are placed on the east edge of a block. I'm testing this with the 1.12.1 version in 1.12.2. A player sensor will "fix" this issue.

Yup, that's it.

Unfortunately my walls are half blocks made via the chisel and bits mod, and since they are not full blocks the player sensor won't attach to it.

Fixed in 1.12.2-7.1.1.