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YouTube Bug: 20-Second Rewind on Tab Reload

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The author investigated a frustrating YouTube bug where videos randomly skip backward 20 seconds during soft reloads. After pausing a video, closing the tab, and reopening it with Ctrl+Shift+T, the playback position consistently drifted 20 seconds earlier each cycle. This behavior was reproducible on the web browser but absent on the Android app, which restored the correct timestamp reliably.

The author reverse-engineered the issue using Chrome DevTools (F12), inspecting JavaScript execution and checkpoint restoration logic. Initial speculation via ChatGPT about shared stack similarities with Instagram was abandoned to focus solely on YouTube. The bug appears rooted in how the web client restores checkpoint timestamps versus the mobile app's handling.

The author humorously noted this creates an undocumented "hotkey" combo (Ctrl+W then Ctrl+Shift+T) for a 20-second rewind, alongside standard shortcuts like Left Arrow (5s) and H (10s). The investigation aimed to provide Google with a precise bug report identifying the fault location and fix, rather than accepting the degraded experience.