MG 2.1 What are these numbers counting?

[7emper5i]

Hi guys,

what are these numbers for?

I've got several images or albums in these selected categories, but the (0) on the right side does confuse everyone.

 

[Chris D]

Run the Category rebuild under Tools > Rebuild caches.

The counts should reflect the number of items in the category.

 

[7emper5i]

Thank you,

a rebuild did not do the trick.

 

[7emper5i]

Is there anything else, what I can do?

 

[7emper5i]

Does anyone have a clue, how to "reactivate" or correct these numbers?
Obviously they do not count correct...