Hello Support...
The Plugin set always initialHeight on the element. This makes problems if you set height with Javascript or work with it. The better way is to set initialHeight if nothing set.
Please update the code in dzszparalleaxer.dev.js on line 437.
Old:
cthis.height(initialheight);
New:
if(cthis.height() === initialheight) {
cthis.height(initialheight);
}