This new version should fix the issue that @wgrace reported concerning the hiding of the List tab and the left side of the window. The previous behavior of shrinking the window has been moved to a new View menu option.
This beta version is no longer available. Look for a later beta release or the most recent Mac App Store release.
It’s working for me.
Question: I realise that ⌘-Y is a toggle. It will reveal or hide the list pane. For the sake of people whose brains say “you hid the list with opt-⌘-Y, use the same keyboard combo to toggle the display”: should opt-⌘-Y also be able to reveal the list?
Good suggestion. I’ll try to get this into the next beta.
Try the latest beta and let me know how this works for you.