Toast notification should be dismissed if you start the timer some other way

[jnm2]

For example, a pomodoro will finish and it will show a toast offering to start a break. If you click start on the main window rather than the toast, perhaps because your mouse happened to be closer in a multi-monitor setup, the toast will stay while the break is counting down. If you then click the start button on the toast, the break starts over from the beginning.