Description of the Issue

In a UTF-8 encoded document, an encoding for a middle dot e2 8b 85 is displayed properly when followed on the same line with a minus sign 82 88 92. When the minus sign is not present, the dot is instead displayed as a empty box. A different minus sign character (2d) does not cause the dot character to appear.

Steps to Reproduce the Issue

1. Open attached dot-to-box.xml.txt file.
2. Delete the minus sign on line 3.
3. Type the - character to add it back in.

Expected Behavior

Appearance of dots should not changed based on other characters on the same line.

Actual Behavior

Removing the minus sign causes the dots to change to boxes.
Adding a different minus sign character does not revert the boxes to dots.

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 Pro (64-bit)
OS Version : 1909
OS Build : 18363.1440
Current ANSI codepage : 1252
Plugins : HexEditor.dll mimeTools.dll NppConverter.dll NppExec.dll NppExport.dll XMLTools.dll