Problem viewing Objects within Synchronization Editor


In a sync project in our development environment, I would like to use the Target System Browser to look at the attributes - especially the virtual ones - and check whether all virtual attributes are set correctly.
However, I do not get any results for some tables in the System Browser in the Sync Editor (One Identity Manager conecction -> Browse -> Schema Type).
If you execute an SQL query with "select count (*)" on these tables, you get a result set greater than zero - so there are entries in these tables.

I wonder what is causing this? If I try the same in our test environment, I can see the entries in the affected tables
take a closer look - can it be related to the cache? We are using version 8.0.5

Thanks for any advice.