The user icon (smiley square) on the User:Contributions page is misplaced in beta. Compare:
http://en.m.wikipedia.beta.wmflabs.org/wiki/Special:Contributions/Kaldari?mobileaction=beta
http://en.m.wikipedia.beta.wmflabs.org/wiki/Special:Contributions/Kaldari?mobileaction=stable
Also the size of the icon is different, although I'm not sure if this is intentional or not.