Floating Bar Stops Before Than Expected

[annie81]

Hi all,

the plugin is great thanks to everyone who is creating it.

I have noticed a small issue, when scrolling down my long posts the floating bar stops far higher than the end of the post as I configured, here you can see what happens :-(

http://www.nergane.it/outfit-della-settimana-look-fashion-blogger/

thank you, Annie