Buttons not aligned

The bug was in the previous versions of the plugin, it is still in the 4.0, which I have just upgraded.

I used to have only FB, Twitter and G+ buttons and everything was OK and properly displayed. I have added email button and it is a few pixels lower than other buttons, my asci art:

BUTTON BUTTON BUTTON
____________________ BUTTON

You can see it on my page, ie: https://paleosmak.pl/dieta-paleo/

When I enable HTML5 for Facebook, the like button is also misaligned:

______ BUTTON BUTTON
BUTTON _____________ BUTTON

I load all styles from the plugin and don’t remove them.

https://www.ads-software.com/plugins/really-simple-facebook-twitter-share-buttons/