Fully booked day showing in calendar view as partially booked

Hi,

we’ve got 5 rafts in stock. They are available for dayly rents oder four some hours. The calculation of the calender and the available timeslots seems to differ. For example the 2021-07-11 shows green, as if there are timeslots availabe and is marked as partial booked.

When I click on that date, the possible timeslots are calculated again and shows empty (thats correct).

Is this a known, maybe already fixed problem?
We user woocommerce booking in version 1.5.4

Thanks a lot for your help.
Best regards, Martin

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