While using AEM 188.8.131.52 we noticed that not all assets collections are showing up when we are trying to add assets to a collection. On our production server the number in the card view was around 40 while in list view was 41. This is using the admin account. At the same time we currently have around 60 assets collections. If we use the Search button next to the "+ Create" button we are able to find the missing collections and then add items to them.
We were able to confirm the same behavior on two other instances where the were seeing around 20-30 collections appearing but still not all. Even if we wait and try to scroll down the rest of the collections do not appear. The page I'm referring to is