Magic Mouse stops scrolling in Firefox.

Frankly, I have never heard of a similar problem. You could try resetting the PRAM.....but only one application affected is puzzling.

Barry

I have exactly the same problem! Sometimes restarting Firefox works - but not always. Likewise - it is only with Firefox that I have a problem.

Help would be much appreciated...

I have the same issue and started happening with Firefox 31. It doesn't happen with Safari or Chrome. I have Mac OSX 10.9.4

I have exactly the same configuration... but after I quit and relaunched Firefox and all now seems well... very strange!

I ended up here after experiencing the same problem (seemingly random and intermittent inability to scroll with Magic Mouse or trackpad when using Firefox) and searching Mozilla and Apple support forums. There are a few separate reports in both communities that refer to the issue seeming to exist only when using Firefox with a Magic Mouse. There are, of course, other threads that don't have that specific combination, but the original post is not a unique occurrence.

In my own case, I am experiencing this problem on two MacBook Pros. I did not have this problem until recently. Also recently I bought a Magic Mouse but have no idea how significant that is (the trackpad also becomes unresponsive on both machines). It does seem unlikely to be coincidence, but still could be, of course. Like most people now, I guess, I gave up manual updating of Firefox a while ago to spare myself the constant reminders and so I don't know what version exactly I had when this started but it is now 31.0 (although Firefox is just waiting for me to quit in order to update to 32.0).

If I quit and reopen Firefox, all is well for a while but then the problem returns. I can still scroll by dragging the scroller in the scroll bar (thankfully not completely gone, as yet) and appreciate the comment about using the up arrow and down arrow keys, which I hadn't thought to do. It seemed to be only one of my MacBooks for a few days, but now seems to be both. Somewhat bizarrely, while concluding this post, Firefox on both computers has resumed scrolling without, as far as I can recall, a restart. I'll aim to give an update after a day or two (as so many final posts say...)

Hi Julie,

Just reporting. I've lately used Firefox far more than Safari but it is an old Mac on Snow Leopard. Firefox is now 32.0 and the update is no problem either.

Hi. I upgraded to Yosemite 10.10.1 yesterday and have been encountering so many issues of which one is the scrolling magic mouse. But rather than Firefox, this has happened to me about 3 or 4 times past 24 hours. Restarting Safari (8.0.2) does the trick but its only a temp solution.

Read my post above.

FOr future reference, post a new thread with your issue. Piggybacking on old threads limits your readership.

Barry

My apologies and understood.

I'm having the problem right now [I think for the last three days, actually]. It is crazy-making that my Magic Mouse works consistently in every program BUT Firefox. I'm running Firefox 38.0.5, which is supposed to be the current version for my Mac mini, which is running OS 10.9.5

I assume there's some upgrade that happened in Firefox that triggered the problem but I have no recollection of doing anything in the last three days that would have changed my Mouse settings.

[Learning from other posters on this thread that more things will go wrong when I upgrade to Yosemite is not remotely comforting...

Rhet