Fixing YT SABR fresh session load issue#334
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As discovered by AdGuards team, the original SABR fix did not resolve the video load in all cases. In fact, it would not work at all in AdGuard. This is suspected to be a server side delay enforced, essentially ignoring our patched backoff. To get around this, if we detect the server side delay, we can force a new session with our patched backoff. This will force Youtube to use our patched backoff instead of their server side delay.
The YT premium check now occurs after the page has been fully loaded. Before, it was attempting to check before the DOM was loaded and therefore would always fail. The check now occurs when determining if we need to patch the ad backoff
ryanbr
approved these changes
Jun 20, 2026
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As discovered by AdGuards team, the original SABR fix did not resolve the video load in all cases. In fact, it would not work at all in AdGuard. This is suspected to be a server side delay enforced, essentially ignoring our patched backoff. To get around this, if we detect the server side delay, we can force a new session with our patched backoff. This will force Youtube to use our patched backoff instead of their server side delay.
Also, the position of the YT Premium check has changed. Before, it was running before the page was fully loaded and would always return false. Now, it runs only when the video starts loading and will return correctly based on the user's Premium status.