For a while now the turning for the volcano (to either go through the tunnel to downtown or continue round the volcano circuit) has been shifted further down the road a bit. It is due to the new turning for the climb portal being just before it i think.
the length you have to turn is as long as it was but it starts further down the road. either shift it back again or move the signs.
As i said - i’m not going to lose any sleep over this one!