I did a Pull Request with a fix about an hour or two ago to hopefully fix that. Did you try it with that tweak? It’s the latest version of the 15 branch.

Hi Harry, Make sure you're trying the unreleased Dawn 15 branch:https://github.com/JonoHall/Shopify-Hide-Unavailable-Options/tree/Dawn-15

Hi team, If you're wondering about the lack of updates to my hack; Unfortunately, after 10 years of Shopifying, the company I work for has made the ill-fated decision to move away from Shopify. Which means I no longer have an active interest in the p...

That idiot just copied my code and posted it up as his own for profit. Please remove the link to his page, as it just gives him more SEO. I asked him to add my Github as a source and he ignored me. His code won't work for the latest version of Dawn, ...

Yeah, that's the new bit of script I've had to add. Basically the new version of Dawn deletes and rebuilds the variant list, deleting my code every time. I don't have any issues on my live site, but I've seen the loop issue before on one of my test w...

Hey Basti, V15 changed a few things and so I've rewritten how the hack works. Check out the new branch below, let me know if you have any probs:https://github.com/JonoHall/Shopify-Hide-Unavailable-Options/tree/Dawn-15

Hi Basti, I think I've cracked it for v15, just testing it at the moment. I'll post an update in the coming days.

Thanks for the update Jim00, I'll certainly update this thread if I make a breakthrough. Seems like we must be missing something, perhaps going about this the wrong way. I can't imagine they would release this powerful tool with no way to filter the ...

Hey Jim00, just found myself in exactly your position. Unable to use "where" to filter a referenced object. Can't use nested values, can't even match the GID with a string. Did you resolve this?

Can you post screenshots of your changes? And a link to your site if possible?

If anyone is still looking for a way to hide unavailable options (but leave Sold Out variants alone), here's my solution:https://github.com/JonoHall/Dawn-Enhanced 

Experiencing the same issue with one of my stores using the DAWN theme. I believe it's related to the "Back in Stock" app. If I enable the "Back in Stock" button the error shows up, if I disable it disappears. I contacted their support and they denie...