I am using twist with vertical thumbnail images on left side with 4 thumbnail layout. I noticed there is a problem if you don’t have enough images to have up/down arrow scrolling in thumbnails. If you press right arrow of the main image to move to the next image, the thumbnails move up by one, and then as a result there are now only 3 thumbnails. If you keep repeating this, you will end up with only 1 thumbnail on the carousel, and no way to choose the missing thumbnail images without using the left arrow in the main (big) image. The behavior I expected would be that all thumbnails should be present at all times, and as you move from one image to the next one, the active thumbnail should change as opposed to the thumbnails scrolling up and disappearing.