Electricity (and perhaps other utilities) sometimes cannot cross new landscape bridges.
It looks like utilities will not cross while the app is not active/asleep.
In my city, water separates my utilities from other areas.
I come back to the game and my satisfaction level, which is usually at 99%, has dropped to 50% or worse.
And my tax revenue is lower Than it should.
the workaround, until fixed, is to always have a road connecting.