When I scroll using the mouse wheel in Firefox the pages don't move a persistent distance with each notch of the wheel - sometimes it's a few lines, then it's the entire … (read more)
When I scroll using the mouse wheel in Firefox the pages don't move a persistent distance with each notch of the wheel - sometimes it's a few lines, then it's the entire length of the window, then a few lines, and then now and then the page will move in the opposite direction I'm scrolling. I tried disabling smooth scrolling which makes the pages bounce less, but it's still unpredictable whether it'll scroll a few lines or several paragraphs. The mouse is set to scroll 3 lines per notch and it works in every other program, just not in Firefox. I also still find that it tries to smooth scroll on some pages despite it being turned off. If I disable the notches in the wheel I can somewhat control the distance the page moves, but it's still bouncing. If I click the middle mouse button - which locks the mouse movement to the scroll bar, the page scrolls just like if I dragged the scroll bar elevator - smooth and exactly how much you'd expect (but a pita to use, not very accurate, and really bad for the wrist).
Incidentally text boxes usually scroll correctly. It's just the web pages themselves that have issues.
This issue pops up every few versions of Firefox and then goes away with a later version, and I've yet to find a way to fix it myself - it just seems to go away eventually on its own - and it doesn't matter what I'm doing. It's even buggered in About:Config.
This time it came either with the Firefox 46 update or when I updated the video driver the other day. But it doesn't happen in any other program. Scrolling works perfectly normal in Thunderbird, Word, Windows Explorer, and anything else I've tried. Only Firefox is having issues.
I tried updating all the mouse related drivers, disabled smooth scrolling in the mouse driver, etc, but Firefox still acts weird. Also tried changing some suggested settings in about:config, but also makes no difference.
Mouse: Logitech Performance MX
Logitech Setpoint 6.67.83
Logitech driver 5.90.41
Windows 7 x64 SP1