Lenstip have this morning
https://www.lenstip.com/index.php?test=obiektywu&test_ob=554 reviewed the Zuiko Digital ED 17 mm f/1.2 PRO. Quite sensational resolution in the centre. The bokeh isn't up to much apparently, possibly because of so many aspheric elements, they say.
I was actually reading that review last night as I hadn't visited that site in a while.
Impressive sharpness across the frame and outstanding center performance but, as you said, the bokeh is still lacking.
While lower constrast OOF image elements are rendered quite nicely, highlights still have that bright rim effect which I find unpleasant and undesirable in a lens at that price.
Unfortunately the site doesn't have similarly comparable sample images for the Panasonic 42.5mm f/1.2 Noctitron, nor any at all for the Olympus 45mm f/1.8
However, checking out the affordable Panasonic 42.5mm f/1.7 shows a lens that is still impressively sharp, but doesn't appear to have the same bright rim outlined highlights, but a rather neutral rendering. I'd buy that.
https://www.lenstip.com/440.12-Lens...mm_f_1.7_ASPH._POWER_O.I.S._Sample_shots.html
It seems like many lens designs with aspheric elements have similar issues with grunchy bokeh, but not all.
Fuji's 50-140mm f/2.8 is a pretty complex zoom that avoids aspherics and has a pretty good overall performance and a pleasant rendering,
most of the time.
However, busy, contrasty backgrounds that are not far enough OOF cans still look... textured. I generally like this using lens but it can falter too. But now we're well off-topic for this thread.
EDIT: image below is linked from LensTip site review of Fuji 50-140mm lens gallery.