Element drag working only once on webview

Question

I have a page that got elements that when long clicked makes it draggable. It works on the Chrome app but not on my WebView.

This is my WebSettings.

String UA = "Mozilla/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76B) AppleWebKit/535.19" +
                    " (KHTML, like Gecko) Chrome/18.0.1025.133 Mobile Safari/535.19";

WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setLoadWithOverviewMode(true);
settings.setSupportZoom(false);
settings.setBuiltInZoomControls(false);
settings.setPluginState(android.webkit.WebSettings.PluginState.ON_DEMAND);
settings.setDatabaseEnabled(true);
settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL);
settings.setRenderPriority(WebSettings.RenderPriority.HIGH);
settings.setCacheMode(WebSettings.LOAD_DEFAULT);
settings.setDomStorageEnabled(false);
settings.setUseWideViewPort(true);
settings.setAllowFileAccess(true);
settings.setAppCacheEnabled(true);

settings.setUserAgentString(UA);

I also already enabled long click on the webview by doing webView.setLongClickable(true);

I can now drag the elements after long clicking. But I can only drag 1. After dragging 1 element, I can't drag anything anymore.

The page the webview loads GSAP TweenMax, Draggable, CSSPlugin if that infos will help.