1. If at 100% view, you can't see the full date value of a history entry. You have set it to at least 90% view.
2. There's no time part in date field, which make one harder to browse through a specific entry when someone doesn't know exactly what specific entry that one want to find (see above 2nd image).
I would suggest just make it word-wrappable when meet right edge of viewable area and add date part, wihch might make history viewing page more user-freiendly.