are resolved in regards of bugs, false inputs
Core keyboard functionality over usb and bluetooth dongle is pretty stable. By that I mean all the Agent-configurable features, basic as well as the fancy ones. There should be no false inputs or similar issues. However the macro engine feature set is pretty large and so there may still be some issues that no one noticed yet - if you run into any, please let me know. I usually fix them within days. (Also please do bump me if it looks like we have forgotten about anything.)
We still struggle with some hid related issues, since these depend on our usb expert whose availabily is limited. This includes general ble hid function (direct bluetooth connection to host, its pairing, and then stable operation of all interfaces - it works on some OSes while it does not on others). Also some of the more obscure usb hid features are still not perfect, like suspending and waking from suspend, especially in the context of high-res scrolling.
Having said this, I am using uhk60 and uhk80 as my daily drivers without issues. The only standing issue for me is the high-res scrolling after waking from suspend with my home computer.
Of course, my account of things is a bit biased in both ways.
Is the issue with the quality of the plastic wrist rest that creates bubbles resolved?
Unfortunately not, but when it is, replacements will be provided: UHK80 and the rubber wrist rest bubbling up - #8 by mlac