Problem with UILabel

[bobobo]

This is the case, I want to reverse my whole game UI, so I did this to my camera:
camera.projectionMatrix * Matrix4x4.Scale(new Vector3(-1, 1, 1));
But I want to keep the UILabel text readable, so I did this to all the UILabel:
label.transform.Rotate(new Vector3(0, 1, 0), 180);

However, many text seems like they are sheltered by the background. And when I remove the rotation to labels the text come back.
And if I modify the rotation at runtime through inspector, it behavies good.
Could anyone figure me out what's the problem ?

[ArenMook]

I'm pretty sure that when you rotate the transform like that, you rotate it around the world origin. Either set the label's rotation directly, or better yet set its local scale to (-1, 1, 1) like you do with the projection matrix.