This plugin does not display watermarks in a consistent fashion

In tiled mosaic mode, I am not able to view the thumbnails with the watermark in the bottom right hand corner, but it displays properly when clicked on. The images should display the watermarks the same way all the time. I have tried several watermark plugins and every time I use one, Tiled Galleries Carousel displays the thumbnails as either not showing or in the centre of the photo. This is a shame because I actually like this plugin otherwise. If this is something someone can help me with, I would really appreciate that.

Thanks