I'm using the carousel without jetpack and I do not seem to have the option to set my galleries to tiled mosaic under the media>image gallery carousel settings. I also tried to set the gallery type in the gallery short code to type="rectangle" but that did nothing. Is there a separate plugin or some snippet of code I have to add somewhere in a template to be able to use the gallery type feature or is that not supported in the version without jetpack? Any help would be appreciated! Thanks!