With the 2018-01-17 release, we can now filter on attachments/comments/locked rows (yes or no).
Please add the first two to the associated Column Menu for those columns.
Also, add filters for the Icon column (resource issue, reminder, pending UR) and add that to its Column Menu too.
If the Filter Menu is not shown, adding a filter for any of the above takes any extra step.
This request has also be posted to the Form
Craig