Excerpt
But the fix is easy and there’s no addons required.
- Navigate to about:config (in Firefox’s URL bar)
- Change the value of the following two properties to 0:
- mousewheel.with_control.action
- mousewheel.with_meta.action
- mousewheel.with_alt.action
I go googling for this far too much. The services.sync stuff at the bottom is also good.