Product variation swatches bug

Hello guys, While updating stuff on that website I figured out that a product has some buged images variations. It’s probably the same for other products, I don’t know. Do you know why it’s buged like that?

Here is the problem;
https://kula-tactical.com/d3-chest-rig-replica

Here is a correct one;
https://kula-tactical.com/d3cr-heavy-chest-rig