@Pierre It just helped me with the same issue. Thanks!

I have a <q-select> with a few dozen options. When expanded, the options list drops down almost to the bottom of the window.

I’d like to limit the number of options displayed at one time, and can hack it with CSS:
(.q-menu { max-height: 20em } e.g.)

I’ve looked through the docs; am I missing a native prop like displayed-options=5 or something?