mx:Text is not working with bindable value

If I am giving direct value to mx:Text it will work fine but it doesn't; works with binded value like
it works with
but it doesn't works with
model.messageVO.message has a value which I tried to print in Alert and it is working fine but in mx:TextArea it is not working

Start by reproducing the difference between a literal value and the bound value in mx:Text, using model.messageVO.message, and compare it with mx:TextArea. Done means a value already present in the model renders in mx:Text the same way as the literal "ABCD" value.

Written by the indexing model from the issue text.