Wayland, sway no more mod4 key picked up

Hello all,

Went to update (unstable) - system running sway+wayland. Has been running great with no issues, but now suddenly “mod4” (windows key) is no longer picked up. A bit of an issue, since I have mod4 as “modifier” key. (which I believe is the default). Have tried:

libinput debug-events --show-keycodes

…which gives me nothing when I hit the windowskey. This worked like a charm before my last update. Not sure what to do. Any help/input much appreciated.