If I send ships through the AoE of Starbases equipped with speed-enhancing modules, the ships sometimes get pulled back before they continue to move once I hit the Turn button. This is a bit difficult to put in words for me, so, here are some pictures:
1. Beginning of the turn.

2. After I moved the ship.

3. Beginning of the next turn.

4. After I hit the Turn button.

5. Beginning of the next turn.

As far as I can tell, this only happens if the target destination is a longer distance away than the ship could reach in one turn.
Here is the savegame for this scenario. I managed to reliably replicate this issue with it.