I'm guessing a bit here, but when you say "The application executes in the WWW environment"
, I'm guessing that you are trying to modify an HTML page? Show us a segment of the HTML page and your code to decode and encode text -> HTML. Your regex will work fine on regular text, but I suspect that is not what you actually have.
In recent memory, I did a quickie kludge to handle the ampersand character in one "get it done right now" LWP application, $clubName =~ s/&/&/g; & is what HTML needs to display the ASCII & character. I suspect something similar is going on. We need more info...
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