The calendar doesn't function as expected when using the Slicer with a date, with Slicer header ON, and Between set.
On clicking on either date field, it correctly pops up the date picker. I then click on the Year and select another Year. The calendar then closes without changing the date. This is incorrect behaviour. The same happens with the Month selector.
It only happens on the first time you select a year (or month) after loading the page. When you try the date picker again, it works fine, taking you back to the calendar with the correct year (or month) selected.
On the other hand, if I select a date from the current month, that works fine.
This occurs in both Power BI Desktop and in app.powerbi.com.