Paste (node) Attributes Color Warp not working

If I try to select a node, copy, go to another clip, select a node Alt(opt)V to Paste Attributes, then select only Color Warper, it does not work. The Paste Attributes dialogue tells me exactly what it should be doing but it doesn't paste the Color Warper settings.
(V 20b3, Win 11 Pro)

I've just tested this on my 2013 MacBookPro, same thing in v 19.2 (Perhaps this post in in the wrong thread now!?). It will paste Curves but not Color Warper. (Big Sur, Intel - too old a machine to run anything properly)

Just to get you moving forward, one idea is to make Color Warper the only adjustment on the node, and use Ctrl+V (Paste) rather than Alt+V (Paste Attributes).

Yes, it's rare that I ever do two things in a node. Which is why I hadn't noticed this bug before!