Hmmm

I don't get any split second yellow screen, is that a 'hint screen' you mention?

Does it have any text?

How big is it? Does it cover the entire chord display area before the chords show? If so, then that is just part of the software initialization processes.

If it looks more like a smaller hint, then these are my hint settings, if that helps:

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BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.