yes.... i agree with you ..... i have the AI controller and when i set thunderstorm it is working ok.... if i connect my modules to the profilux controller whites stick.....
the only way to have a proper thunderstorm with the latest firmware is to do it when all lights are set to 0% ...

it is during the phasing down that the whites start to stick.... actually sometimes the whole module lights up at 100% and then fades down...... its like something is triggering a reboot of the unit.... i think.....