Ah, it works now!
Somehow, $cui->{-read_timeout} was -1, although it shouldn't be. So I changed it directly to 0, et voila, it doesn't wait for a key press anymore. :)
Thanks, ikegami.

In reply to Re^2: Curses::UI loop dilemma by Anonymous Monk
in thread Curses::UI loop dilemma by Anonymous Monk

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