Finder preview: See file size and date in column view I use Finder mostly in the column view, which has a preview option. This shows a thumbnail of the selected file. Previously this showed file information like a date and file size. I prefer this much over the current view.

How do I get the file size and date info back without having to open the Info window?
You can control what is shown in the Preview pane with "Show Preview Options" under the View menu. 
However, these settings seem to apply per-filetype.

You may want to remove the Quick Actions bar, which gets in the way of the file info. (You can still access the Quick Actions on a right-click Contextual menu.)