/testfor @p doesn't consider x,y,z anymore

Heyho. Just tested the new snapshot and things got weird:
The /testfor command doesn't seem to consider the coordinations given to it anymore:
Im clearly outside of a specific region and this command worked in all versions before:

testfor @p[x=118,y=81,z=120,dx=20,dy=14,dz=14]

Normally it should return that it cant find the UUID (because im outside).
Now it finds me also even if the conditions not met.