I actually think that was pretty p-poor of the police there.
Looked like he was edging into the box before the green
Then he under takes
Then he cuts cross chevrons
Cyclist would have been better off sitting over to the left but still no excuse to drive like that. Someone positioned badly in front of you does not give you the excuse to drive poorly too.
edit: looking again I’m not sure the cyclist was that out of position. That middle lane seems to have the option to take lane 2 or 3 at the split. Cyclist knew he wanted lane 3 and doesnt really cut much over to the left after the car passes.
Pretty sure you would fail your driving test for doing that.