My YouTube subscription box shows "new" videos, from about the past 3 days, that I haven't watched.
However, it forgets that I've watched them in slightly less time. The difference might be 24 hours, with the record being 72 hours and the sub box showing everything under 96 hours -- something like that.
Is there something I can adjust to fix this behavior? I'm thinking that it is expired cookies, or a history otherwise being deleted.
Using latest (or nearly so) FF, if it matters, but this has been a persistent problem.
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