you can see that the pitch modulator keeps looping
You only posted an image there.
But I watched the video you sent. I don't think it's looping, if you hold the note down then the LFO is going to continue to oscillate as long as audio is playing. If it continues after you release the key that's probably due to the release time of your envelope.
@Gabor-K thanks, i dont have an intel Mac. Have no chance to test my plugin on the intel Mac. But i wonder if i recompile the HISE on the right setting to support "Standard Architectures (Apple Silicon, Intel)"...