Dev UI wraps code viewer content in <!----> HTML comments (on Safari and Chrome, but not Firefox)

[holly-cummins]

Describe the bug

This was actually spotted by @hannotify, I'm just passing on his diagnosis. :)

See attached screenshot. Content using the code viewer seems to get some unwanted HTML comments appended to either side.

Expected behavior

No response

Actual behavior

No response

How to Reproduce?

I couldn't reproduce on Firefox, only on Safari and Chrome.

Running an application with a non-empty application.properties file and looking in the source editor in the Configuration view should do it: http://localhost:8080/q/dev-ui/configuration-source-editor

Alternatively, for a more exciting reproducer, you could build https://github.com/holly-cummins/bon-jova-rockstar-implementation and then quarkus dev in the bon-jova-app project. Then click on the Rockstar endpoints item in the Bon Jova tile and expand one of the rows. That will give the following:

Output of uname -a or ver

No response

Output of java -version

No response

Quarkus version or git rev

No response

Build tool (ie. output of mvnw --version or gradlew --version)

No response

Additional information

No response

[quarkus-bot]

/cc @cescoffier (devui), @phillip-kruger (devui)