Hi !
I had the same issue and tried this, just using css :
@media screen and (max-width: 767px) {
.left-sidebar {
top: 0 !important;
}
}
It just disables movement by using css3 media query to overwrite the “top” property when screen is under a certain width. It’s easy and seems to work fine… But I haven’t tried on mobile devices yet.
