[BUG] Ghost Comment Styling

Is there an existing issue for this?

• I have searched the existing issues

Description of the Issue

Even though my language is defined to only use ( ) for comments, I get comment styling randomly where it should not be. I can "chase" it and eventually get it to disappear without actually altering the content. Also, doing a compare seems to reset the bug as well.

Steps To Reproduce

I'm not sure the exact trigger for this behavior, but it happens to me regularly as of late.

Here is my language file:

EDM.xml.zip

Current Behavior

https://github.com/notepad-plus-plus/notepad-plus-plus/assets/12439543/ea9f37d9-c16b-4887-b1e8-48f4eac692a4

Expected Behavior

I expect comment styling only inside a pair of parenthesis.

Debug Information

Notepad++ v8.6.5   (64-bit)
Build time : Mar 29 2024 - 17:04:43
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line : "G:\Shared drives\Wolfram Engineering\W CAM\GCODE\TMA8-2\aaa.nc"
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
Periodic Backup : ON
OS Name : Windows 10 Pro (64-bit
OS Version : 22H2
OS Build : 19045.4291
Current ANSI codepage : 1252
Plugins : 
    ComparePlugin (2.0.2)
    mimeTools (3.1)
    NppConverter (4.6)
    NppExport (0.4)

Anything else?

I love the program, thank you!

Reproduce the issue in Notepad++ v8.6.5 using the provided EDM.xml.zip language definition, focusing on comment styling outside paired parentheses. Compare behavior is also reported as resetting the bug. Done means comment styling appears only inside a pair of parentheses and does not disappear merely by chasing or comparing.