If you look at their list of bugs you'll see that all in all...this one is relatively minor. They are more concerned with amarok crashing with sig faults and then I know they are working on some feature requests that are pretty critical (such as playlist support for mp3 players, MTP devices, etc...), unfortunately there aren't a lot of developers so they have to prioritize and, despite me agreeing with you that this is annoying, it's not critical and the music player is still functional with the bug...
If you look at their list of bugs you'll see that all in all...this one is relatively minor. They are more concerned with amarok crashing with sig faults and then I know they are working on some feature requests that are pretty critical (such as playlist support for mp3 players, MTP devices, etc...), unfortunately there aren't a lot of developers so they have to prioritize and, despite me agreeing with you that this is annoying, it's not critical and the music player is still functional with the bug...