Fixing the runaway text zoom on Firefox and Macs

Fixing the runaway text zoom on Firefox and Macs

Another day, another crazy Firefox finding. This time, it's about scroll inertia and zooming on the Mac. I sometimes "throw" a scroll in order to hit the top or bottom of a page. This seems to be buffered by the OS and it means the current program gets scroll events for a while longer.

I found a similar annoyance with the whole "scroll, then push control" thing back in 2011. This time, it's the same sort of interaction, but the command key is implicated.

In short, two-fingered trackpad scrolling inertia plus the command key equals huge fonts or tiny fonts. Yep, it seems to have jumped from control to command, and the thing I squashed 18 months ago is back.

This time, the fix seems to be mousewheel.with_meta.action = -1.

I can only assume this happened with Firefox 20, since it seems to have sprung back to life in the last several days. I don't think I started behaving differently for no good reason.

That's what really bothers me about changes like this. For a couple of days, you think you're nuts. Then you have to go digging for changelog references in order to regain your own sanity.