Description
See this post from Tony Mottaz, where there is currently non-interoperable behaviour about whether hanging-punctuation styles inherit into pre-formatted text blocks.
I would recommend adding pre { hanging-punctuation: none; } to the user agent stylesheet (assuming the HTML folks are OK with that). Authors can override if they need to, but I think the more common situation is to want to add typographic niceties to body text but keep text columns neatly monospaced for pre-formatted blocks!
Another option (and this may be how other browsers have implemented it) is to make hanging-punctuation have no effect in a preserved whitespace context. But that removes the author choice.
Either way, the sooner this change is made, the better, just in case there's anyone out there who does like their code braces hanging off the sides of their code block & they get used to the current behaviour.