Developer finds 11 of 12 SVG gradients broken due to duplicate HTML id bug

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A web developer discovered that 11 out of 12 SVG gradient emblems on their site were silently broken due to duplicate id attributes in the HTML markup. The bug arose from pasting the same SVG element twelve times, each carrying the same id value, causing browsers to resolve all gradient references to only the first matching definition. Despite five separate audits and a full 46-page site scan, no tool flagged the issue because all twelve definitions were visually identical. A naive find-and-replace fix initially made things worse by mismatching definitions and references across blocks, as each emblem referenced its gradient roughly ten times. The correct solution scoped each rename to its individual block, ensuring definitions and references were paired accurately within each element.

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