I noticed a peculiar phenomena:
When I'm looking at the Files | Applications section, in the installed column, randomly, various Apps has their installed date modified to today even though it wasn't updated.
Not a major issue but a nuisance.
Why is it happening?
No, its not, since you can see in the Play Store which Apps were updated and while in MPE it says Today (as I said, random Apps) in the Play Store those Apps were not updated.