I have a 2017 P01 Omega in which I can re-create the malfunction with the decocker levers and the slide fully back with the recoil spring removed as demo-ed in the video on page 1 of the thread. I doesn't happen with the safety levers.
From what I can see and others have alluded to (forgive me if I'm being redundant...I haven't read all 16 pages of this thread so far), the decocker spring tends to put some lateral pressure to the left on the left decocker lever so that if the ejector is depressed with the slide fully back and the hammer under tension from the slide, the left lever tends to move laterally to the left enough that the detent in the left lever disengages from the frame allowing the lever to rotate upwards and lock up the pistol.
I only plan on using the safety levers anyway, but I am interested in seeing what becomes of the issue.