There is still a problem here. The patch caused the punctuation characters to be displayed again, but the characters cannot be selected in a browser. I haven't tested every browser, but on MacOS at least, this affects both Chrome and Firefox. In most cases, this isn't a problem, however for CheckUsers, it may be an issue.
When investigating complex sockpuppetry cases, I frequently copy/paste CU data into a text editor to make it easier to correctly format the results of the investigation for posting on-wiki. As it stands now, copying the data leaves out the parenthesis and pipe characters, so for this purpose, the fix didn't work. Please see the attached screenshots.  The reason that the parens, etc., are needed for this purpose is because I use regex to find the username, and the first parens is what I search for.
List users does it as well, for example: https://en.wikipedia.org/wiki/Special:ListUsers?username=DoRD&group=checkuser&wpsubmit=&wpFormIdentifier=mw-listusers-form&limit=1