There is a workaround: Create a Virtual Tag which references Date Added and then you can choose to display that Virtual Tag.
To create a Virtual Tag, go to Preferences > Tags (1) > Define new tags... For this case,we could do like:
label: Virtual Date Added
formula: $Date(<Date Added>,yyyy-MM-dd)
This will make it so that each entry in the column with date added will be shown using year, month and day only.
Another solution would be to ask in the Wishlist forum for <Date Added> to be available as a field in the Track Browser.