Why does second line of text vanish when stage is being re-sized ActionScript 3?

Why does second line of text vanish when stage is being re-sized
ActionScript 3?

References

Reference NO 1

http://stackoverflow.com/questions/15166218/why-does-second-line-of-text-vanish-when-stage-is-being-re-sized-actionscript-3

Reference NO 2

http://stackoverflow.com/questions/1516391/textfield-autosizeitalics-cuts-of-last-character

Reference NO 3

http://stackoverflow.com/questions/14772687/why-does-an-alpha-tween-jump-in-flash-swf-but-not-when-published-for-ios

Reference NO 4

http://www.tomauger.com/2013/flash-actionscript/getting-started-with-actionscript-3-and-flash-using-flashdevelop

Reference NO 5

http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/DisplayObject.html

Reference NO 6

http://stairwellblog.com/2009/03/creating-fluid-as3-flash-layouts-the-basics/

Reference NO 7

#EANF#

Reference NO 8

#EANF#