code block is not showing properly

[chs33]

Steps to reproduce the behavior:

[chs33]

as I tried seems like the problem is due to second occurrence of "std::", Anki doesn't like that

[Trenton-Ruf]

Verifying the above solution. Removing references to the std namespace fixes the error.
Not a great "fix" when the cards are about implementing the standard library lol.

When a codeblock uses std::

Without std::