Firefox + custom elements + iframes bug
Read OriginalThis technical article explains a long-standing Firefox bug that occurs when a web component (custom element) is moved into an iframe, causing it to lose its custom prototype and instance methods. The author, from Shopify, describes the issue, provides a code example of the failure, and offers a practical solution involving the `adoptedCallback` and `disconnectedCallback` lifecycle methods to restore the element's prototype.
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