Search vs. Search for Selected Text

[armsys]

Hi $bill,
Your explanation is crystal clear in accordance with the manual.
But has you actually tried it out on the latest version of UR?
The reason that I raised the question is a bug. That's it doesn't work as you defined.
I also discover the cause of the bug:
After the first search, say, "kinook", UR will embed the first search in the Advanced setting | (Item) contains keywords "knook".
Henceforth, all new <Search for selected text> will fail.
This bug didn't occur before 5.1.