No new info here. Just summarizing the thread for those who prefer tl;dr:
- Known issue affecting drivers that use both fan control and level capabilities
- They are working on it
- Temporary workaround (if you need one) is to abstract the fan out of Alexa's knowledge. That is, don't use any kind of fan on the Alexa side, but instead have a routine triggered on speech on the Alexa side that controls a virtual switch on the Hubitat side, such as "Alexa, kitchen fan medium".