Turning on "Prefix serialized JSON with" in ACF causes issues in code coverage report

/system/coverage/browser/CodeBrowser.cfc creates HTML/JavaScript content. In that content it creates a variable named lineNumbersBGColorsJSON. This is currently set as follows.

The resulting file typically looks something like this:

When the Prefix serialized JSON with box is checked in ACF (we are running ACF 2018) the result ends up as follows:

The prefix comments out the JSON string, causing the line numbers not to show the colors.