599350 - Chrome Experiment "Gear" renders differently in Minefield and Chromium

Status: RESOLVED WORKSFORME

(Core :: CSS Parsing and Computation, defect)

Description

[blaw1]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; rv:2.0b7pre) Gecko/20100923 Firefox/4.0b7pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.0b7pre) Gecko/20100923 Firefox/4.0b7pre

When mousing over the gears there is a visible black arrow that shows up in the background of the square that is rotating.

Reproducible: Always

Steps to Reproduce:
1. Launch Experiment
2. Place cursor over a gear

Actual Results:  
A visible black arrow shows up in the background of the square that is rotating.

Expected Results:  
The gear should rotate smoothly without a visible arrow in the background.

Comment 1

[Boris Zbarsky [:bzbarsky]]

So there's supposed to be a black arrow pointing to where you put your mouse, I think.  The rotation should be smooth, though.

Comment 2

[Boris Zbarsky [:bzbarsky]]

Oh, and this experiment uses neither JS nor canvas.  Just transforms and transitions.  And it only uses -webkit-transition, not -moz-transition.  So in Gecko you will get an immediate rotation, not a smooth one.

I commented on the experiment, but if someone wants to contact the author directly, that would be awesome...

Comment 3

[Kenan]

WFM with Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0

with https://blog.onthewings.net/wp-content/uploads/2009/11/css-experiment_gear.php

mozregression shows it was fixed on 2016-01-02
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=22f51211915bf7daff076180847a7140d35aa353&tochange=ce643acfab14d95bea2fb6c4f56477413514b686

Comment 4

[Emilio Cobos Álvarez [:emilio]]

Thanks!