Using GIF from URL breaks UIImageView in list when loading images later on in the list

[PeterMorrison250]

When creating a scrollable list that contains both GIFs and static images, if a GIF is loaded in through a URL, it breaks that UIImageView, so that when that list cell is recycled and an image is loaded into that cell, it just renders as a blank cell instead of the image.

The more the user scrolls through this list, the more the recycling occurs and the more that this damaged UIImageView causes static images to become blank.

This behaviour can be seen in the SwiftyGif example solution by adding a local static image file and referencing it 5 or 6 times in the ViewController images array. When scrolling through it, there will be multiple static images showing as blank in the list

[PeterMorrison250]

Here is a screen recording of the scenario. There is a single GIF being downloaded from a URL, and the rest of the images in the list are JPEGs. Initially there is only one cell that does not work when the gif cell is recycled, but as I scroll more and more cells become dead.