Unexpected Extra Silence Generated When Zooming Out During Selection – Audacity 3.7.3 on Windows 11 24H2

[Leterel]

I’m experiencing a bug in Audacity 3.7.3 on Windows 11 24H2.

Steps to Reproduce:

1. Zoom in very closely to the end of an audio track – to the last sample.
2. Start a selection by clicking and holding the left mouse button around 0:45 (doesn’t have to be exact).
3. While still holding the mouse button, zoom out significantly using the mouse wheel.
4. Drag the selection all the way to the beginning of the track, around 0:00.
5. Use Generate → Silence to silence the selected area.

Expected Behavior:

• Silence is applied exactly to the selected area (e.g., from 0:45 to 0:00), and no extra audio is added.

Actual Behavior:

• Audacity generates about 0.10 seconds of additional silence beyond what I selected.
• This only happens when zooming out during the selection process.
• The issue did not occur in earlier versions of Audacity.

Additional Notes:

• It looks like the selection boundary becomes misaligned due to the zooming out during selection, and this causes more silence to be generated than intended.
• It’s a subtle bug, but problematic for precision editing.

[mugen2x]

Hello, could you provide a video showing the steps to reproduce? I can’t seem to reproduce this issue so far.