Double sound feedback when changing volume slider with Magic Mouse

[kukata81]

Hello!

Problem description:​

I noticed a strange behavior in macOS 26 when adjusting the system volume.
When I use the volume slider in Sound Settings:

• If I move or click the slider with the Trackpad → I hear a single sound (normal feedback).
• If I do the same with the Apple Magic Mouse → every movement or click on the slider produces a double sound(like a double “pop”).

This happens both when dragging the slider and when simply clicking on it with the mouse.

Additional details:​

• Using the hardware volume keys (F11/F12) plays only a single sound.
• Disabling the option “Play feedback when volume is changed” removes the sound completely, but then there’s no feedback at all.
• It seems the NSSlider in Sound Settings sends two events when using the Magic Mouse, while with the Trackpad it only sends one.

Has anyone else noticed this behavior? Is this a bug in macOS , something specific to the Magic Mouse, or intentional? Is there a way to make the sound feedback single (like with the Trackpad)?
I should also mention that this issue is not new to macOS 26 – I’ve noticed the same double sound behavior in earlier versions of macOS as well.

Additionally, I sometimes observe another strange bug: when I right-click with the Magic Mouse, instead of opening the usual context menu, it occasionally opens the Trash and prompts me to empty it.

 

[judgeFire]

Could you be triggering a drag on the mouse trackpad while doing a regular drag? I used to have this issue when building a web based selection box some years ago; after the user released the mouse button, the trackpad area would register a few pixels worth of scroll. If the sound slider responds to hover + scroll, that could be it.

 

[kukata81]

I don't think so. It does it every time. I tested it quite carefully so that it doesn't have that exact effect.