Even with the new "help" floating button, the target resources are "out of scope" of current work data and should probably open in a new tab/page.

Above that, the 'help' environment currently doesn't provide any link back to the Homepage (let alone the page the user was on when calling the doc). A user's logical move away shouldn't resort to her using the browser's backwards button (or editing the URL) and, were she looking for some chain of info pieces, it might happen that her journey in the doc exceed the browser's backwards limit.

As a side thought, I wonder if the Documentation link towards the User guide should be localized, given the legacy content of an increasing part of the French translation. Especially explanations with screenshots, which is the downside of improving the real UI ;)