Maybe I found what "drob" means ...
In "Registry Cleaner" after selecting all listed entries and when clicking "Remove" the entries are removed at once without previous/preceding warning concerning "backups", although my backup settings are 1) always create a backup ... and 2) generate the description and display for editing.
After modifying the backup settings in 1) Always ask me if I want a backup ... and 2) Always ask me for description, after selecting the listed entries and clicking "Remove", there's a pop-up asking me if I want a backup to be created, but when I click "yes", there's no further message/input box to let me choose the description.
So something is wrong with the preceding backup description message box => that box does not popup.