Description of the Issue

When partially selecting a group of collapsed results from the Find-result window, the right-click-Copy operation does not contain the data from the final file in the group.

Steps to Reproduce the Issue

1. Create 4 new file tabs, new 1 through new 4 in a freshly unzipped portable version of N++
2. Insert the appropriate version of this text into each: I'm from new _, filling in the _
3. Do a Find All in All Opened Documents as shown here:
   
4. Observe results of the FAIAOD:
   
5. Partially select all of the results with the mouse, possible example:
   
6. Right-click on the selected text and choose Copy from the menu that appears.
7. Create a new N++ tab (new 5) and paste there; observe the correct result:
   
8. Collapse the search results so they appear like this:
   
9. Partially select all of the collapsed results with the mouse, then right-click on the selected text and choose Copy from the menu that appears, like this:
   
10. Create a new N++ tab (new 6) and paste there; observe the INCORRECT result:
    

Expected Behavior

I expected the same textual result in tab new 5 in step 7 as in tab new 6 in step 10. All four lines should be copied.

Actual Behavior

The line of data from the new 4 search result is not copied and is lost in steps 9-10. Only 3 lines are copied.

Debug Information

Notepad++ v7.8.9 (32-bit)
Build time : Jul 15 2020 - 20:26:50
Path : C:\...............\npp.7.8.9.bin\notepad++.exe
Admin mode : OFF
Local Conf mode : ON
OS Name : Windows 10 Enterprise (64-bit)
OS Version : 1809
OS Build : 17763.1339
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll PythonScript.dll