Bigcommerce Repeating Url

So this is a two-parter.

1. I'm doing SEO for a client using Bigcommerce and Screaming Frog is returning some crazy URLs. Here is an example:

~/shop/product_images/product_images/product_images/uploaded_images/img-email.jpg

There are thousands of these. with /product_images being repeated ranging from only once, to up to dozens and dozens of times. This is duplicated over the product categories as well ie

~/shop/kitchen/countertops/product_images/...

2. The weirdest part about it is that they all (including ~/shop/product_images/img-email.jpg) resolve to the home page, with a 200 response no less. Not a 404 or a 301/302 redirect or anything.

Feel like I'm missing something obvious, but I can't find anything in the dashboard that seems to make sense.

Anyone seen anything like this before?

Check all your links. May be you have errors. Something like product_images instead of /product_images i.e. missing slash. You can find this info as Inlinks and Outlinks in Screaming Frog.