Incorrect text positioning calculation when a keyframe is added to timeline with text

[pawelstan]

Hey!

If a textfield has a single frame through all timeline its positioning correctly. Adding a keyframe on text fields timeline breaks its x position.

Example fla included.

https://drive.google.com/file/d/0B3WbKzhNu6REYTZUZC1UYldSUzQ/view?usp=sharing