You've got to admit it's interesting.
I know how to block run - I've temporarily done this in gpedit, but thank you
But did BOTH history lists vanish? Or have you clicked arrow on the right of the run window to check - this list is from MRU in registry and is cleared.
Did it also clean records which are shown when the first drive letter is typed?
Sorry for asking but if it's true it's really weird.
CCleaner analysis show that there's nothing to remove ;/
MRU is removed alright:
But there are records which CCleaner doesn't recognize: