Smart settings seem to be not so smart lately

I've got my wifi set to go off when I leave the house, which it does. But lately, when I return home, I've noticed the wifi has not gone back on. This has happened many, but not all the time. I've got my location set on high accuracy too. When this does happen, I either go to Smart settings and turn off then on again, or just head to wifi and turn on. Any ideas?

I had that happen also,even though "Home" was selected from Google maps as the trusted location. What I did to re-establish was to add the current location as trusted.