Tracking Tab: Track forward AND back button

If you set a tracker on a frame that is in the middle of your footage it would be good if there was a button to track forwards /and/ backwards, rather than having to track forwards, wait for it to complete, then track backwards. Particularly as tracking can be time consuming, and having to wait for it to complete in one direction and then set it off in the other direction can really slow down the workflow.

The behaviour would be the same as if you track forwards then come back to the original frame and track backwards, but in a single click operation. Seems like an easy UI fix.

Mockup of the UI attached.