rx and rxm arguments are broken
I am sorry if this is a duplicate, or I used the arguments wrong, but it seems like they are bugged.
Example command:
/execute @a[rx=100,rxm=1] ~ ~ ~ /say BUG!
Created Issue:
rx and rxm arguments are broken
I am sorry if this is a duplicate, or I used the arguments wrong, but it seems like they are bugged.
Example command:/execute @a[rx=100,rxm=1] ~ ~ ~ /say BUG!
Removed Labels: rx,rxm,ry,rym

The rotation of your head is 4.2°. This fits perfectly in [1°,100°].
But 4.2° is the ry isn't it?
Nope.
X is pitch axis - rotation of the head
Y is the yaw axis - rotation of whole body
http://en.wikipedia.org/wiki/Aircraft_principal_axes