Yes i have a lot of third party AUs. But i think i started to have problems after instaling Wave Audio plugins. I’ve got them in a bundle so i cannot specifiy which one could cause the problem. I also installed a virtual synth called ArcSyn.
Standard audio units are not a problem for sure, neither logic pro’s plugins.
I shot a video for you how it looks and compressed it to 9MB, i hope that can help you.
I look forward for finding the solution for this problem.