1446713 - Tab loading throbber is not accessible to users sensitive to changes in visual motion

Status: RESOLVED DUPLICATE of bug 1431237

(Firefox :: Theme, defect, P3)

Description

[Stuart Cook]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:60.0) Gecko/20100101 Firefox/60.0
Build ID: 20180315232954

Steps to reproduce:

Load any website in a tab, causing the loading throbber to appear as the tab's icon.


Actual results:

The intermittent motion of the throbber is painful, making Firefox impossible to use for users who are sensitive to changes in visual motion.


Expected results:

While moving, the throbber should move continuously, rather than intermittently.

Comment 1

[Stuart Cook]

I've been using userChrome.css to get around this, but that's not a realistic solution for most affected users, especially if there are plans to further reduce accessibility customization options.

Comment 2

[Stuart Cook]

Just to be completely clear, I'm talking about the loading indicators that wobble back and forth as the page is loading:

https://dxr.mozilla.org/mozilla-central/source/browser/themes/shared/tabbrowser/tab-loading.png

Comment 3

[Dão Gottwald [:dao]]

(In reply to Stuart Cook from comment #0)
> While moving, the throbber should move continuously, rather than
> intermittently.

Can we make this animation more continuous?

Comment 4

[MarjaE]

Also, the userChrome.css fix doesn't work while Firefox is starting.

A colored indicator would be best, but even rotating animation should be better than the constantly slowing down and speeding up animation.

Comment 6

[Tim Nguyen :ntim]

Also adding Eric, since he originally designed the animation.