I have been experimenting with cycling between the different types of views using F2. I have noticed that when I get to the 4th view (where the ship flys away from a static viewpoint) that turbo gets turned off. Fortunately, it automatically gets turned back on when you cycle back to the default view, but it is troublesome if you are, say, fleeing from a pack of bots in an Ion storm.

That is intentional as is the turbo disabled when the camera moves and the ship is static.

This is because there used to be an infinite turbo bug (discovered by yours truly) where you could boost forever in that mode. Turbo was then disabled in that mode.

It really isn't a very useful camera angle anyway. It should probably be disabled.

it's used for making screen shots.

now that you can infi turbo anyway its not important though.