Find-in-Finder produces hit when it shouldn't when searching in previously found lines

[sasumner]

Description of the Issue

Steps to Reproduce the Issue

1. Create some text in a new Notepad++ tab:

Jack and Jill
Went up the hill
To fetch a pail of water
Jack fell down
And broke his crown,
And Jill came tumbling after.

2. Do a Ctrl+S and give that file a name in the file system (IMPORTANT! Do not continue these steps with an "unnamed" file, e.g. "new 1"):
   

3. Initiate a Find by pressing Ctrl+f and fill out the search this way:
   

4. Conduct the search by pressing the Find All in Current Document button

5. Observe the following result:
   

6. Right-click in the Find result window to obtain:
   

7. Select Find in these found results...

8. Fill out the resulting window this way:
   

9. Press the Find All button in the Find in found results window

10. Observe:
    

Expected Behavior

I expect Notepad++ to indicate that no hits occurred because I told it to Search only in found lines. Because fetch doesn't occur in any of the previously found lines, it should result in a decision of "0 hits".

Actual Behavior

Notepad++ displays "1 hit" but does not show that single hit, so I don't really know what it is thinking. :-)

Debug Information

Notepad++ v7.8.7 (32-bit)
Build time : Jun 5 2020 - 02:34:28
Path : C:\...........\npp.7.8.7.bin\notepad++.exe
Admin mode : OFF
Local Conf mode : ON
OS Name : Windows 10 Enterprise (64-bit)
OS Version : 1809
OS Build : 17763.1039
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll