You mentioned being on Firmware 46…
just wanted to point out one item:
Samsung Connect Home/SmartThings WiFi Hub Firmware Update https://status.smartthings.com/incidents/6sw37lx84zl1
There was another user missing their z-wave utilities so not sure if it is related. Don’t know if they are on the older firmware or latest https://community.smartthings.com/t/et-wv520-connect-home-wifi-hub-is-missing-settings-z-wave-utilities/265484