Dear Borate,
I am not referring to video, but to AUDIO fade. I am using v 8.63.
Please put an audio clip on the timeline and fade it out. It fades smoothly to the desired extend. So far so good!
Now put again a clip on the timeline and slow it down, i.e. to 60% . Then, try to apply fade-out. You will immediately see my point!
You don't have to hear it, you see it on the descending line of the fade.
If needed I will provide more info (photos or a small project) in order to help fixing it. But I think, you will notice it immediately...
Please remember that I am talking about AUDIO
Regards,
Takis