Description of the Issue

Hi,
On startup, grey areas appear as shown in the image below.
Even if I remove them, they appear again after launching the application.

Steps to Reproduce the Issue

Expected Behavior

Actual Behavior

Debug Information

Notepad++ v7.9.5 (64-bit)
Build time : Mar 21 2021 - 02:13:17
Path : C:\Program Files\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS Name : Windows 10 Home Single Language (64-bit)
OS Version : 2009
OS Build : 19042.870
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll