Problems with UTF-8 characters inside stings in variables

[smborio]

I have a problem with Parsons questions authored in Italian (and I can imagine other languages have similar problems), which I suspect it's a more general issue for strings including latex created in the question variables. I am using \operatorname{nullità}(A) for the Nullity of a matrix, which displays as follows, with an incorrect accented a at the end:

I tried using latex inside the operatorname command and use latex syntax for the accented a and it doesn't help. Something like \operatorname{nullit\`{a}}(A) would work but it gives me the following, which makes me think it's a parser thing (this is what I would naturally do in Latex directly, maybe I'm missing something):

What somewhat worked was using \mathbf{nullità}(A), which seems a hacky solution, or \mathop{\mathrm{nullit\grave{a}}}(A), which creates a huge accent instead:

If it's a problem with my authoring please could you let me know? Otherwise, I would be thankful if the cause could be investigated.

Note: I'm using double backslash in my commands, it is displaying as only one in this issue for some reason.

[aharjula]

Can you confirm that the healthcheck scripts' Unicode test results in the correct output?

Basically, I see three cases:

1. Some form of escaping mistake, but I assume you do know to use double \\ in Maxima strings.
2. MathJax or whatever does not have suitable chars for the active font, leading to issues with mixed kerning when mixing different fonts? I am betting on this, maybe try different MathJax render modes to see if that affects things.
3. If the healtcheck unicode test does not work, then it would probably show in more places, but that could explain output breaking for multi-byte chars, but I doubt that is the case here. But it would be a symptom of a wrong locale in Maxima and lead to issues like in Spaces sometimes display as ?? #832.

Just to confirm, does Markdown have any role here? That accent in the second sample seems to be the same one used for styling code in it?

[smborio]

Unfortunately I don't have admin access so I cannot run the script. I will ask and come back to you.

I am using double backslash, the issue removes one for some reason.

I don't fully understand your last question, sorry. I don't think markdown has anything to do with this (except for it removing a backslash in the issue text).

[aharjula]

I suspect that test will show the ∀-char correctly; you would probably have noticed issues with accents elsewhere already if the issue were there. Basically, {@unicode(8704)@} in a question would work as the test as well.

[aharjula]

Quick testing seems to show this to be an issue with MathJax 3. Here are tests in 2, 3, and 4. So most likely not a STACK issue.