Comment Popup when Timer Stopped

In my work I often track time to a task multiple times, and clients sometime come back asking what I did for x hours on day y - do adding comments to tracked time is important.

I love that I can start the tracker right from my agenda. But when stopping it, I can't add a comment but have to instead navigate to the task anyways.

When stopping the timer, showing a quick popup comment form would make this much more convenient.