Issue when switching form dark mode back to light mode

[triniumbarryassadi]

Description of the Issue

I have the latest version (Notepad++ v8.4.8) installed and now have dark mode.

Steps to Reproduce the Issue

1. Start in light mode with a file open.
2. Switch to dark mode.
3. Switch back to light mode.
4. A black vertical bar now appears on the left of the text; to the right of the row counter ruler.

Expected Behavior

That bar should not be there.

Actual Behavior

Debug Information

[donho]

@triniumbarryassadi
Please provide Debug Information

[triniumbarryassadi]

Notepad++ v8.4.8 (64-bit)
Build time : Dec 24 2022 - 19:40:27
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 21H2
OS Build : 19044.2364
Current ANSI codepage : 1252
Plugins :
mimeTools (2.9)
NppConverter (4.5)
NppExport (0.4)
XMLTools (3.1.1.13)

[mikavaliviita]

4. A black vertical bar now appears on the left of the text; to the right of the row counter ruler.

I can also confirm this behaviour with 8.4.8