Dynamic text boxes not showing up when you use .rotation?

Hi,

For one of my movie clips I’m using…

mc.rotation +=90;

…then reverting to…

mc.rotation -=90;

However, for some reason when I do this whatever content I had in the dynamic text boxes within “mc” doesn’t show up. I can still do mc.scaleX and mc.scaleY transformations and the contents of the dynamic text boxes show up, but once I throw rotation in there they disappear.

Anyone know why this is happening?