Just an update on this in case anyone else ever sees this or has this issue in their logs. I figured it out to be the devices (fan) default values for speed parameters were blank. This also give you the result of the fan will come on but not change speed. I am using the “My GE Fan Control Switch” DTH written by @johnconstantelo .
If you go to the devices details page in the IDE and scroll down to the preferences section. the vaules in the circled area in the image will be blank. Just click edit and enter the default values and everything will be good.
I don’t know how or why they went blank. I only noticed it after the update when I was looking through my activity logs. I know it was working before when I installed it. Who knows? More Gremlins.
I only recognized the source because I have had this happen before when I first installed one of my fan switches. I just wrote that up to newbie error.
OKAY EDIT #2: This came back again today. This time it would only do it when the fan was running. I had to remove the switch and put everything back. It appears to be correct now so possibly I was just lucky the other day when I put the values back. They need to be put back anyway.