This junction has recently been "upgraded", but it still has a single lane at the lights, with a left filter arrow which turns green before the main light to proceed straight ahead.
If you are waiting to proceed straight ahead this effectively means you are marooned in the middle of the junction with traffic behind you waiting to turn left.
Not much fun in a car either, but it is considerably more unpleasant and dangerous on a bike.
I'm not sure if there is an answer other than removing the left filter cycle.
There is a general difficulty with decent routes from this area north up to Woodbridge Road in the rush hour, and this would seem like the best route if it were not for this issue.