Using "Move region 'A' to player 'B'" trigger action will move the region to the feet of the player.
Around there.
However, when the character is flipped upside down, the location where the region moved to is "offseted up", off the player.
Around there.
I quote offset because the region is actually not offseted. Instead, the 'hitbox' responsible for triggers (not taking damage) moves up when the player is flipped upside down.
I consider this as a bug because the health bar as well the player's name flips correctly according to the player.
Bug happening in action:
Notice the wing when the character is flipped.