dhtmlxMessage hide and unhide

I found the dhtmlxmessage has been hide when we click OK or press esc key. Is there is any way to unhide?. Because my messagebox contains form widgets which is taking some to load upon every time. So instead of that, once loaded it can be shown again?. like the ones in dhtmlxwindow?

Grab latest version from github and check modalbox demos.

Thanks for your support.