Hello,

I am sorry to hear you are having an issue. I did some basic research and came across suggestions to check some of the configuration settings (some users reported issues after upgrading to OS X Mavericks) https://support.mozilla.org/en-US/kb/scrolling-issue-firefox-os-x-mavericks. You could re-map these control or try the "Reset" command to ensure that these settings are normal.

Has this always been an issue? Or did it present after an update/change?

You may also be able to adjust the sensitivity of the trackpad through the trackpad control settings.

Please let us know.

- JIm

Hi Jim, thanks for your response.

I did as the instructions said, which I am sure will have solved my problem because I can now no longer swipe left or right. But that's the thing, I do like that feature, I just don't like the problem I was having with it.

I've had Firefox installed for a long time, but i didn't use it often, so I don't know if there were problems. I switched recently from Safari to Firefox because Safari was annoying me. I upgraded recently to El Capitan, so I don't know if that initiated the swiping problem.

Before I disabled the swiping, I also noticed that clicking was also really sensitive and that I would unintentionally click things quite often. And sometimes, after exiting whatever I accidentally clicked, such as a floating photo viewing window, that window would randomly pop up again a few times after. Just seems like the browser is buggy and/or laggy.

I don't want to change my general trackpad settings because they work well outside of Firefox.