social bar jumps to middle when the page is shortened vertically

I had an issue with the floating social bar cutting off on the right, so after reading the forum I added this to my stylesheet:

#wdsb-share-box{
width: 90px !important;
}

This fixed the problem of being cut off. However, now I have an issue with the bar jumping to the middle of the page when I shorten the page vertically.
See screenshot showing how it looks at full-screen height,
and the second screenshot showing what happens when I shorten the page.

I'm running most updated version of WP; Genesis framework and Enterprise Pro child theme, also most updated versions.

Thanks in advance.