corfu-terminal

Corfu uses child frames to display candidates.  This makes Corfu
unusable on terminal.  This package replaces that with popup/popon,
which works everywhere.  Use M-x corfu-terminal-mode to enable.
You'll probably want to enable it only on terminal.  In that case,
put the following in your init file:

  (unless (display-graphic-p)
    (corfu-terminal-mode +1))