Description:
------------
After Upgrading PHP from 4.3.3 to 4.4.0, rendered text   
with imagettftext() doesn't show Umlauts in some cases.  
It doesn't matter if the string is utf8 encoded or not,  
the result is the same.  
 
If an Umlaut is followed by a space, it is correctly 
printed:  
 
// Works 
 
$text = 'Testing\xe4 ...'; 
 
But if it is followed by some other Umlaut or 
a different char, it doesn't work at all. 
 
 // Doesn't work 
$text = 'Testing\xe4a ...'; 
 
Any ideas ? 
 
Installed packages are: 
 
gd-2.0.33_1,1 
freetype2-2.1.4_1 

Reproduce code:
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<?php

 // Set the content-type
 header("Content-type: image/png");

 // Create the image
 $im = imagecreatetruecolor(400, 30);

 // Create some colors
 $white = imagecolorallocate($im, 255, 255, 255);
 $grey = imagecolorallocate($im, 128, 128, 128);
 $black = imagecolorallocate($im, 128, 128, 0);

 // Doesn't work
 $text = ' 5 Testing\xe4a ...';

 // Works
 $text = ' 5 Testing\xe4 ...';

 // Replace path by your own font path
 $font = arialn.ttf';

 // Add some shadow to the text
 imagettftext($im, 20, 0, 11, 21, $grey, $font, $text);

 // Add the text
 imagettftext($im, 20, 0, 10, 20, $black, $font, $text);

 // Using imagepng() results in clearer text compared with imagejpeg()
 imagepng($im);
 imagedestroy($im);
 ?>

Expected result:
----------------