Wanted to flag something I ran into while debugging a merchant store. App embed blocks with target = "body" seem to be injected before the first occurrence of the literal string </body> in the rendered layout, rather than the actual document-closing tag. If a theme has a </body> substring earlier …

Although this is a duplicate I want to assure every Shopify staff that this is a pretty old bug, that I’ve remember noticing more than an year ago. The other bug where the same behaviour happens if the store owner for some reason doesn’t close either the </body> or </html> tag is as old as Shopify. …

Body-target app embed blocks injected before the first </body> substring (breaks when a theme has </body> in a comment)

Extensions

Luke May 27, 2026, 9:04am 2

I believe this is a duplicate of:

https://community.shopify.dev/t/theme-app-extensions-injected-inside-html-comments-containing-body/

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Body-target app embed blocks injected before the first </body> substring (breaks when a theme has </body> in a comment)

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