Yesterday I flagged this "answer" as Not An Answer and the flag was declined.
The answer is from the person who originally asked the question and appears to be a response to a comment on the question.
The answer is from a person with the same name as the original poster (sockpuppet?, I'll flag this separately) and appears to be a response to a comment on the question.
Perhaps the label's font simply isn't available and therefore it creates a blank, opaque texture? What font are the labels using? Try changing the fontName parameter to "Arial" or "Courier" for fixed-width.
The Label's font is Helvetica which is available by default. It can not be a problem, because some messages appear right some not.
What can I do now to further dispute the "answer"?