So this is not really a bug but fits into the category as it is rather something that simply didn't exist due to the developer not thinking someone would try to mix multiple button regions together in order to avoid using too many variables to make a simple buying system that sends a message when there is not enough
The "Bug" occurs when two "press E" regions were put in the same location so basically when a player presses E at that location the action only goes toward the region that was placed before the other regions. This is due to the game being designed to trigger 1 region when pressing E and not multiple