Bug at rendering track using IAA effect plugin

I have a weird issue that generate from 1 to 3 seconds of no sound at the beginning of a track that has been rendered.
To reproduce:
1.apply an IAA effect on the master.
2.Render your song.
3.Open it : the beginning of the wav is “empty”, then after 1 to 3 seconds the wav is here…(but the beginning has been cuted)

With C2, same project, no issue.

Hi motoo_kissmeerecords,

Thanks for your message.

Please add a short video clip that shows the exact steps and results, to allow us reproducing the problem.