A customer of me encountered the following screen:
Looks ok, until you give it a better view: it is empty and there are no headings.
Security? Don't think so, either overview would not be available or data would not be there and headers would be shown.
When debuging, I found the following:
So there is data. I even tried using selecting multiple rows, RMB to use Edit Copy Object. I pasted that in a NotePad and there is data.
RMB on header to use Column Chooser is not available.
Via an admin user, I found out that column visibility is 0 for all columns:
With this in mind, I changed the first 0 into 1 and also in the row ColVisibilityFin. I saved this, logged in as the user with problems and the next was then available:
With Column Chooser available again, user could continue.
I guess the user was a bit to drastic with removal of the columns in Column Chooser.