3.4 Noise Reduction (and other Effects) Reportedly Shifting Track to the Right

[JohnColket]

Steps to reproduce

1. Generate 30s tone.
2. Select about last 20s of tone
3. Duplicate.
4. Select some audio in the first or second track, open the noise reduction effect, and press get noise profile.
5. Select the clip on the second track.
6. Apply the noise reduction effect.

Expected behavior

Operation completed successfully

Actual behavior

Tracks shifting to the right

Audacity Version

latest stable version (from audacityteam.org/download)

Operating system

Windows, macOS

Additional Info

Several Forum users have made similar reports:

tiberius: https://forum.audacityteam.org/t/noise-reduction-shifting-track/88649
Robosquid: https://forum.audacityteam.org/t/new-bug-feature-with-3-4-noise-reduction/88981
dante1st: https://forum.audacityteam.org/t/new-bug-feature-with-3-4-noise-reduction/88981/4
robni7: https://forum.audacityteam.org/t/new-bug-feature-with-3-4-noise-reduction/88981/7
GerryVienneau: https://forum.audacityteam.org/t/new-bug-feature-with-3-4-noise-reduction/88981/8

[JohnColket]

Possibly related to these issues:

#5523
#5573

[DavidBailes]

Some steps to reproduce (tested with 3.4.1):

1. Generate 30s tone.
2. Select about last 20s of tone
3. Duplicate.
4. Select some audio in the first or second track, open the noise reduction effect, and press get noise profile.
5. Select the clip on the second track.
6. Apply the noise reduction effect.

After step 3:

After step 6:

Compare with Audacity 3.3.3
After step 6:

[JohnColket]

Some steps to reproduce

Thanks you David. 😃

[dozzzzer]

Some steps to reproduce

Thanks David! Following these, I was able to reproduce the issue.

[DavidBailes]

@dozzzzer . Please could this be added to 3.4.2? P3 seems low given it involves loss of data.

[dozzzzer]

@DavidBailes yes, on track for 3.4.2!

[Paul-Licameli]

Bisects to 0928096

[dozzzzer]

Tested