Kind of The actual useragent checking is a bit crude. Right now, any phone that has the following text in the useragent qualifies as an "advanced mobile browser":
Code:
/(ipad|ipod|iphone|blackberry|android|pre\/|palm os|palm|hiptop|avantgo|plucker|xiino|blazer|elaine)/i
I imagine it should also be possible to test visiting the forum with your useragent to see if the issue can be reproduced simply by adjusting that variable. Do you know the useragent of your mobile browser? Apparently there is a website for that: http://whatsmyuseragent.com/