The automatic assignment of the facing_direction block state on placement of the three command block block types is incorrect when the placing player is in negative lateral coordinates. In particular, for each lateral axis independently when in negative coordinates, the placement range satisfying up and down orientation placement is off by 1, shifted in the positive direction.

The linked video should do a much better job of visually expressing the problem: https://youtu.be/yuJ7z_mpR_c