I am trying to use the database expert to select the data I want to display. However, in some instances the table's columns are not being displayed. Instead, only a single column - ID - is being shown, and it contains no data.
Is there any reason why this might be the case?
This is not a bug but sometimes registery value will be less which prevents disappearing of tables.
Check below link which will show you the path to change registry.
forumtopics.com/busobj/viewtopic.php?p=1004707
I would suggest you to first take back up of the original data and then change the value.