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Peekaboo Bug

The Peekaboo Bug was a notorious Internet Explorer rendering glitch where content would mysteriously disappear and reappear when users scrolled or hovered over page elements, typically occurring with floated layouts and hasLayout issues. The bug earned its name because content would "peek" in and out of visibility unpredictably, making it extremely frustrating for users and developers.

Why Peekaboo Bug Matters

The Peekaboo Bug exemplified the unpredictable and mysterious nature of IE rendering problems that went beyond simple CSS incompatibilities to fundamental engine instabilities. This bug and others like it demonstrated how browser quality issues could create user experience problems that no amount of CSS hacking could fully resolve, driving demand for browser alternatives and standards compliance.

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