Hi Marcin,
Could you give a bit more detail? Such as: Which browser you’re viewing it in? Also, a link to the actual page where it’s deployed would be handy.
Looking at other buttons on the internet right now it doesn’t seem to be an issue, and we didn’t deploy yesterday so nothing’s changed. However, this is the web, and it’s big and diverse and full of variables, so if you can give us a bit more to work with I’ll try to reproduce it and improve our sizing algorithm.