Why can't build google tracking links for multi-attribute products?

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I created a tracking link through this website (https://ga-dev-tools.appspot.com/campaign-url-builder/) for multi-attribute products (e.g https://www.365factoryoutlet.com/collections/home-kitchen/products/bed-in-a-bag-comforter-set-8pcs-w...)

But after I clicked the below link including utm tags, all the utm tags are disappeared.


This problem only occurs in multi-attribute products, there is no such problem on other pages of the website, who could help me? Thank you!