Carousel doesn't display all the gallery photos

I created a gallery post with 15 photos, but the carousel only displays the first ten. After that it starts over and continues cycling, showing only the first ten photos. When I view the gallery post on my site, the caption says the gallery contains 15 photos. If I click on one of the photos in the carousel, all 15 photos are displayed in column format down the page, as expected. Are you limited to ten photos in a carousel?