So what should a motorist do to a cyclist that overtakes on the left as the motorist is turning left, with indicator on, at an intersection?
This happens to me nearly weekly and if I wasn't aware of cyclists, I would have cleaned up more than one.
Wait, like you are now, all good.
PASSING (OVERTAKING) VEHICLES ON THE LEFT
Whether you are riding in a marked bicycle lane or sharing a
lane with a vehicle, a bicycle rider must not pass or overtake
on the left of any vehicle that is giving a left change of direction
signal and is turning left. A bicycle rider may pass or overtake
a vehicle on the left when the vehicle is giving a left change of
direction signal and is stationary or moving forward to turn left.
Once the vehicle begins turning left the rider must not ride past
or overtake the vehicle on the left.
A driver turning left through a break in a dividing strip must
give way to any cyclist travelling in the bicycle lane. A dividing
strip is a painted area or a raised structure, located between
intersections, separating the bicycle lane from a marked lane.
Drivers must not overtake a cyclist and then turn left in front
of the cyclist’s path without due care and consideration to the
movement and safety of the cyclist.
That's for South Australia. If you're indicating, but stopped, they can pass on the left, but it's not always a good idea.
We need to remember that a bike lane is another lane of traffic. Would you pull across a freeway without checking for traffic coming behind you?
Anyway, regardless of if people are following the law or not, I just try not to hit anyone. It sounds like you do too