Adding time to recently cancelled timers is broken #1
Description
The added timer includes the original time: e.g. for a 30 minute timer that expired 5 minutes ago, "add 10 minutes" should yield 5 minutes remaining, not 30
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The added timer includes the original time: e.g. for a 30 minute timer that expired 5 minutes ago, "add 10 minutes" should yield 5 minutes remaining, not 30