I have a SharePoint Library with almost 2000 items (each item is a PDF document with some additional standard Fields for metadata).
When using the web UI to show additional columns, they appear at first and all the information for the fields can be seen. The moment I navigate away and back, or simply refresh the page, the columns all become hidden again.
The only columns that remain are: Name, Modified and Modified By.
I have no idea how or why this is happening. Please help!