Broken Table Viewer in QlikView Desktop 12.40 and later versions
In QlikView Desktop April 2019 (12.40) and later versions, when opening Table Viewer (Ctrl + T), tables in the data model shows as empty boxes without table names and field names. This happens to both Internal Table View and Source Table View.
The issue is OS-specific. It has been reported in Windows Server 2008 R2 and Windows 7, but not reproducible in other systems.
Add "GraphicsBackEnd=0" in the settings.ini file. On the desktop navigate to C:\Users\<User>\AppData\Roaming\QlikTech\QlikView\Settings.ini