HTC One Wifi not autmatically turning on

A

AC Question

I recently did a system upgrade I my HCT one.

Prior to the upgrade I always had my Wifi on, and when I would arrive home my phone would automatically switch from mobile data to Wifi.

Now (since the upgrade), it doesn't.

I check that the Wifi is on, and it is. Interestingly, it seems I actually can't turn it off - unless I hit the Wifi button (and it still appears on), then restart my phone, after which it turns on with the Wifi off. I can then turn it on, and it works. If I go out though and then return home, it doesn't automatically switch to Wifi like it used to. I have to go through the whole process of turning off Wifi, and restarting the phone.

Any suggestions? Very annoying to always be restarting my phone!