Inner Feather Circle in Radial Gradient is missing

SInce last update - I am on CR 17.5.12319 now - the inner circle (feathering amount) has not been visible. I can still adjust the feathering on the slider, but the graphical interpretation has gone.
It's on two Windows 11 machines - a laptop and a very well spec. desktop, so I don't think it's a hardware issue.
I don't know if this is on purpose, or perhaps somebody has made the same observation.
Jan, DK