When using the «Tab» key to quickly navigate slider settings in the brush panel, Highlights are skipped over- the selection will jump from contrast down to shadows. I know this is only minor but it slows workflow. I have not noticed any other similar jumps yet.
I have also noticed since upgrading that the erasing brush stroke will sometimes not show unless I change to a new image and return to the image I am editing. It usually occurs when erasing straight lines (while holding the «Shift» key).
Updates to Lightroom Classic and the Lightroom Ecosystem products for Desktop, Mobile and Web were released today and contain a fix for this issue. Please refresh your Creative Cloud application and install your update when it becomes available. Thank you for your patience.