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MacOS Firefox goes back/forward on horizontal scroll with mouse

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pawprotas
pawprotas
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Hi,

On MacOS whenever I use the horizontal scrollwheel on my mouse (MX Master 3) in Firefox, the browser sometimes decides to go to the previous/next tab instead of scrolling horizontally. It's kind of difficult to describe the exact behavior: the horizontal scrolling DOES work. but whenever I hit the 'start' or 'end' of the scrollbar and scroll a bit further, the browser goes to the previous/next tab. This behavior doesn't occur in Chrome, the horizontal scrolling works fine in that browser.

I've tried the following: Setting mousewheel.with_alt.action to 0 --> Still not working browser.gesture.swipe.left/right to 'blank' --> Nope

Further info: Firefox Developer Edition 100.0b3 on M1 Mac using MX Master 3

Hi, On MacOS whenever I use the horizontal scrollwheel on my mouse (MX Master 3) in Firefox, the browser sometimes decides to go to the previous/next tab instead of scrolling horizontally. It's kind of difficult to describe the exact behavior: the horizontal scrolling DOES work. but whenever I hit the 'start' or 'end' of the scrollbar and scroll a bit further, the browser goes to the previous/next tab. This behavior doesn't occur in Chrome, the horizontal scrolling works fine in that browser. I've tried the following: Setting mousewheel.with_alt.action to 0 --> Still not working browser.gesture.swipe.left/right to 'blank' --> Nope Further info: Firefox Developer Edition 100.0b3 on M1 Mac using MX Master 3

All Replies (2)

jeyson1099
jeyson1099
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Hello, try this: enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named mousewheel.default.delta_multiplier_y. double-click it and change its value to -100.

In Firefox you use the Shift modifier to scroll horizontally. You can possibly swap these two prefs on the about:config page: mousewheel.with_alt.action = 2 => 4 mousewheel.with_shift.action = 4 => 2 You can use '0' to disable a specific action. You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

https://support.mozilla.org/en-US/kb/about-config-editor-firefox Mousewheel action prefs on the about:config page: mousewheel.default.action mousewheel.with_*.action mousewheel.with_alt.action = 2 mousewheel.with_control.action = 3 mousewheel.with_meta.action = 1 mousewheel.with_shift.action = 4 mousewheel.with_win.action= 1

Action: 0: Nothing happens 1: Scrolling contents 2: Go back or go forward, in your history 3: Zoom in or out (reflowing zoom) 4: Treat vertical wheel as horizontal scroll 5: Zoom in or out (pinch zoom)

pawprotas
pawprotas Küsimuse esitaja
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This didn't work, the delta config option just reversed my regular scroll direction, this option doesn't seem to be related to the problem at all.

Also, even if I put with_control, with_alt and with_shift action to 0, the page still goes back when I scroll my horizontal wheel.