Bug displaying graph panels using UTC timezone


We have a big regression on all our dashboard displaying daily graph panels (I mean using Today, Yesterday, etc. time selector)

Instead of correctly displaying 0h-24h range like before, it is displaying now 22h-22h range.
You can see it even with an empty panel:

The 2 hours difference is the same as the difference between our timezone and UTC. Maybe ther is a link.

Our grafana (hosted) version is 6.7.1.