Why sharing my personal calendar also shares my personal to-do list?

I share my personal calendar with my wife, so she can see my appointments. But when I do this, she also see my personal to-do list.
I donโ€™t want this.

Is it possible to share only my personal calendar, but not my personal to-do list?

When creating a new calendar, you can create a calendar with or without tasks lists. Create a calendar without tasks list, and share this one.

This is, what I done now. Itโ€™s not great, but I can live with it.

I too, was looking for a way to do this. What about having your wife subscribe to your calendar using the private link?