I see the same problem when trying to access the tool from the right-click pop-up menu, so the best thing to do is to submit a ticket to CL tech support so they can verify the issue and have engineering fix it.

If you're lucky, they'll relaese a hotfix through the forum moderator that will restore the functionality. That's a lot quicker than waiting for the next regular update.

You can reach them here.

As they've just changed the way to access various tools, I did some more checking and found that the new way - but only the new way - works.

To access Audio Ducking the new way, select the clip then click on the new Edit button that appears at the top of the timeline. From the new panel that appears, click on the Audio tab and then on Audio Ducking. The 4 steps in the sequence are shown below

Quote As they've just changed the way to access various tools, I did some more checking and found that the new way - but only the new way - works.

To access Audio Ducking the new way, select the clip then click on the new Edit button that appears at the top of the timeline. From the new panel that appears, click on the Audio tab and then on Audio Ducking. The 4 steps in the sequence are shown below

Thanks. You're a Star! Usually, I right-click one audio track and picked Audio Ducking. They've changed everything, but I don't really care where it is as long it works. Thanks again!

I'm just glad there was a workaround! I've just reported the issue on ticket CS002625291

Just an update that CL tech support confirmed the issue and they've forwarded it to engineering for review.