I have the same problem with current SVN. To reproduce (for example, it happens on many more tracks):
- start a race on the Scotland track
- drive to the 'sea' after the 'town'
- drive into the water, so that Thunderbird rescues you
Instead of dropping you again on the road, you are immediately rescued again. This continues over and over, until you manually end the race.
This seems to happen only when you drive into water (or are otherwise rescued because you drive on a certain material), but it does not happen when you press the "rescue" button manually.
If you want, I could post a screenshot/video showing the bug?