-e: The value reported by HingeJoint.angle is incorrect when an object with the HingeJoint component has a non-zero angle set in either the x or z rotation in its transform, and the parent object is subsequently rotated in the y or z axes. In this setup the parent object is the connected body and the joint's axis is the x axis.

-repro:
--open project attached to first edit
--Set the rotation angle of TopCube to zero.
--Run the scene
--Rotate the BottomCube
--Observe that the reported HingeJoint.angle stays nearly zero
--Set the transform rotation angle of TopCube to non-zero, say 10
--Run the scene
--In the scene view, select the "BottomCube" object and rotate it in either the y or z axis.
--NOTICE in the console that the value reported by HingeJoint.angle changes unexpectedly, even though the joint has not rotated about its axis.