Hardware Acceleration has caused many users issues, so they keep it disabled.

Who is keeping it disabled?

urdypooh said

I cannot scroll on the website (no matter which graphics processor I use) unless I *disable* "Use recommended performance settings" and *disable* "use hardware acceleration when available".

When a plugin (Flash) has focus then scrolling with the wheel doesn't work.

Did you try to click elsewhere on the page to see if that has effect?

Yes. No matter where I click on the website it just won't scroll.

If you have a three button mouse, clicking the middle button turns the mouse into a Scroll controller.

I don't have a mouse. I use the two finger gesture on my touchpad to scroll on a website or I use the arrow keys on my keyboard. Both activities work on all other websites I use just not on this particular one.

Make mouse/touchpads have problems.

Are you saying the arrow keys also do not work?

Yes...that's what I am saying. Arrow keys don't work either. The only thing that works then is the tab key...but the tab order on the site is pretty...well...odd.

https://support.mozilla.org/kb/Clear+Recent+History#w_how-do-i-remove-a-single-website-from-my-history

Remove History For One Site

Open the History Manager <Control><Shift> H. In the search bar, enter the name of the site. Right-click on one of the listings and select Forget About This Site. This should remove all information, including any passwords / settings.

Removing passwords / settings didn't help.

(My settings are to remove them anyway as soon as I quit Firefox along with all the cookies.)