Button Text in Firefox - Slightly Off Center Vertically

Hello,

Just wanted to make you aware of a small rendering variation in Firefox with some of the buttons. I'm using Firefox 37.0.2, which I believe is the most up-to-date.

Please use this part of your demo site as reference:

http://www.smartclient.com/#buttonAutoFit

The button to look at has the text "Change Title".

In Chrome & IE, the text appears to be perfectly centered vertically, but in Firefox, the text is off center vertically, and is closer to the bottom of the button. Looks to be about a pixel or two off.

Obviously not a critical issue, but thought I would mention it in case it was an easy fix to throw into a nightly build.

Thanks,

Philip