Hello,

I see a space no longer necessary for phpBB 3.3 (viewtopic page) in responsive mode...

http://area51.phpbb.com/phpBB

 I honestly do not know how to create the "PR" (phpBB 3.3.A) to solve this.

On responsive.css file find:

.has-profile .post-buttons { right: 30px; top: 15px; }

And replace with:

.has-profile .post-buttons { right: 5px; top: 15px; }

Best regards.