Hello, I've been a Zotero user for ~7 years and am comfortable with the desktop and web versions.

Recently several columns in the library view of my desktop version disappeared, behind the item pane, and I cannot resize or drag them back out. I've tried on several different work times, spaced weeks apart.

I would appreciate guidance on how to manipulate the columns or add through a menu. (View--> Layout only changes the panes visible, not columns).