"Available place" counting wrong

Hi, I want to display a text in my event overview if the event is fully booked. In the source, I can select "available place" as a condition which works almost fine. The problem is, the minimum value is 1.

If an event has 3 place left, available place is 3. If there is just 1 place left, available place is 1. If there is nothing left, available place is still 1 (not null or 0). Can you please check this?

We have checked the available place content source issue for fully booked events and updated the package. Thank you