Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.96.2
• OS Version: Windows 11 Pro (10.0.22631

Steps to Reproduce:

1. In any xml file with an xml comment () add a "--" in the comment ()
2. The entire rest of the xml file is now the xml comment color

FWIW - I was documenting some command line parameters in a project.xml file.
So this:
--app-file SomeFile

broke the rest of the file.
but anyone putting "--help", or other such command line commands would have the same problem.