I am using a SmartSlider inside the GP header element on my home page. Everything was working fine for the first few months, then one day I noticed the slider had dropped down 100-200 px (approx — hard to tell) and displays a larger static b/g image of the first slide in the extra space at the top. When I inspect the element, it shows that the .page-hero computed size is 492 px high while my slider setting is set at 200 px high (in the plugin’s settings). The entire page-hero area appears to be more like 300-400 pixels high.
Also, when I use WP’s Customize function/tool to try tweaking the CSS, everything looks the way it should be. But as soon as I exit Customize, it goes wonky again. I still tried editing the CSS for the .page-hero height but to no avail. Any ideas what the issue could be and how to correct it?