I am using SharePoint Server 2013. I have a Power Pivot Gallery with several Power Pivot Excel files and Power View files. Besides All Documents view, the Power Pivot Gallery has several beautiful views such as Gallery, Theater and Carousel which are available out of the box. In the original Power Pivot Gallery library all these views are working perfectly.
But when I insert this Power Pivot Gallery as a web part or app part in another SharePoint page, only the All Documents view work where as Gallery, Theater and Carousel views does not work. Though there is an option to select the view for that web part, it always renders as All Documents view.
I tested the same thing with Image library. Its thumbnail view works perfectly when this Image library is added as app part in another SharePoint page.