[BUG] \vec is not rendered when concealed

[Ben9986]

Description

When using the conceal feature, the \vec character is not rendered. Seems the icon is missing from the font that is used but changing my interface or code font doesn't fix it.

To Reproduce

$$\vec{H}$$

Expected Behavior

Either the H should render with an arrow above or not at all if it isn't possible. Not display missing char icon.

Additional Info

Screenshots

With conceal enabled:

With conceal disabled:

[superle3]

Hello, JuliaMono at https://juliamono.netlify.app/ does conceal this correctly for me.

FiraMono another popular nerd font and with a lot more symbols did not so this may be an obscure icon.
Setting JuliaMono as one of the fonts in monospace font works.

This should be added to the docs.