What is block selection supposed to be doing in wrapped lines?

[bersbersbers]

Description of the Issue

Block selection, when started in the second line of a wrapped line, seems to always consider the first line only.

Steps to Reproduce the Issue

1. Open empty file
2. Enter Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Z
3. Make sure line wrapping is on and the line is long enough to be wrapped.
4. Place cursor at end of line (after Z).
5. Press Alt-Shift-Left to start a block selection.

Expected Behavior

Z is selected.

Actual Behavior

Some other Y is selected.

Variant

If you have a long first line before the YZ line, also try this:
4. Place cursor at end of YZ line.
5. Press Alt-Shift-Left to start a block selection.
6. Press Alt-Shift-Up to extend the block selection to the first line.

Note that you actually have to press Alt-Shift-Up twice, this is certainly unexpected.

Debug Information

Notepad++ v7.7   (64-bit)
Build time : May 19 2019 - 13:05:35
Path : C:\Program Files\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS : Windows 10 (64-bit)
Plugins : DSpellCheck.dll mimeTools.dll NppConverter.dll 

[MetaChuh]

@bersbersbers

this seems to be the same behaviour with scite 4.1.4, which uses the same scintilla engine as notepad++ 7.7, as well as with scintilla 4.1.5.

unfortunately the scintilla editor component is an external project, so we can't do much about it at the notepad++ part.
if you can't work out any workaround with the help of our notepad++ community, please file an issue at the scintilla project.

many thanks for your understanding, our apologies, and best regards.

[bersbersbers]

Thanks - I reported https://sourceforge.net/p/scintilla/bugs/2105/