I installed a 2nd circuit to my pool nouns. GFCI breaker and it won't trip. All powers up, experiment won't work I have two outlets, a feathery, and a light switch coming...

I have two outlets, a feathery, and a light switch coming rotten the circuit. There is not a shared neutral. 12/2 chain goes into first outlet box where on earth it is divided 3 additional ways. A second outlet is wired black to hot side of productive outlet, white to neutral side of untested outlet. White wire (taped black) to power side of desk light switch from hot side of original outlet, black line back from switch connected single to black wire going up to street light (wire nutted two together). White wire from pale itself goes to dull side of original outlet. All grounds connected together and grounded to productive outlet ground. Everything works, plug in tester shows correct circuit, radio works when plugged contained by. Light comes on. GFCI breaker will not trip when test button pushed.
Could I hold a bad breaker? Or am I missing something near a ground. The second circuit is on a shared ground with the untested circuit all the channel back to the bus handrail. Neutral are separate.
Answers:    Do you have the independent from the feed tied within to the GFI breaker, and the white pigtail to the neutral public house? You may have a impossible breaker. If you have another one surrounded by the panel already try switching them around and see if it trips on the other circuit.
Yes you could have a impossible breaker, all the electrical system sounds correct. You seem to recognize what you are doing with the circuits. Test the breaker within question by using a voltage tester the is a string to ground test not an inductive type (non contact). Test it at the panel near the breaker on from the ground to the output of the breaker. This should trip the breaker, if it does not, test to the indeterminate buss. This should indicate the problem component. Good Luck.