Honestly I wish I had a more comprehensive answer for this but it's sort of "luck of the draw" when it comes to many bonuses. We actively run tests on bonuses to see what works and what doesn't, but to achieve this we have to segment who gets what. Sometimes there's overlap, sometimes there isn't.
Not ideal, I know, but that's the reason. In the end it's to benefit savers the most as we are working on finding the best ways to structure bonuses. In the short term however, it can lead to some folks not having any bonuses for a week.
For what it's worth I just passed this feedback along in a thread with some folks higher up. If we ever plan to change this I'll post it in an update.
