Strange behaviour with indentation and random UUIDs

[JanaNF]

I talked in great length with @anian03 about this issue. We think this is a Regex problem.
As seen in the screencast, random UUIDs appear in a HTML code.

This was the code:

<title>Alert Example</title> <script> alert("Hello"); </script>

ScreenRecording_11-26-2024.00-26-55_1.MP4