Link to tutorial on tablist-minor-mode
I created a tutorial for tablist-minor-mode. See How I shortlist add-ons for my Emacs: Introducing tablist – Emacs Notes.
Problems I discovered
Problem 1
See the above article (and the gif within it) for the sequence of operations that would trigger the error below.
Error in post-comand-hook (package-menu--post-refresh): (void-function nil)

Problem 2
Export to CSV doesn't create a comma-separated list. It creates a semicolon-separated list instead.