Hi there - this is an FYI for everyone using this amazing theme.

If you want your sidebar to follow correctly, and responsively, then use this code (i recommend inserting it to the footer with the Custom css-php-js plugin)

var p = jQuery.noConflict();

sticky_div2();

function sticky_div2() {

if ( p('#sidebar-inner').length ) {

var

el = p('#sidebar-inner'),

stickyTop2 = p('#sidebar-inner').offset().top,

margin = p('#header-space').length ? p('#header-space').height() : 0;

p(window).scroll(function(){

var

stickyHeight2 = p('#sidebar-inner').outerHeight(true),

limit = p('#footer-outer').offset().top - stickyHeight2,

windowTop = p(window).scrollTop();

/*--- by top -----------------------------*/

if ( stickyTop2 < windowTop + margin ) {

el.css({ position: 'fixed', top: margin + 10});

}

else {

el.css( 'position', 'static' );

}

/*--- by footer -----------------------------*/

if ( limit < windowTop + margin) {

var

diff = limit - windowTop;

el.css({ position: 'fixed', top: diff });

}

});

}

}

YOU WILL ALSO NEED TO ADD THIS TO CUSTOM CSS: 

#sidebar-inner {

display:inline-block;

}

@media screen and (max-width:1000px) {

#sidebar-inner {

position: relative !important;

top: 0px !important;

}

}