Severe website breaking bug

Hi @socialdude hope you can help with this one,

As soon as I deactivate your plugin any custom header image I have on my Twenty Seventeen theme breaks and doesn’t load as if no image is loaded. Strangely enough the default theme image works but any other doesn’t. As soon as I reactivate it custom images work again.

I’m using Jetpack’s photon CDN for images and I’m really surprised to say the least as I don’t understand what your plugin has to do with theming header images. It’s a shame to be stuck with a plugin because a reason like this.

Hope we can fix this.

The page I need help with: [log in to see the link]