1327809 - Autoscrolling circle stays on the page (not canceled) if browser/content process randomly becomes more busy

Status: NEW

(Toolkit :: General, defect)

Description

[arni2033]

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
1. Open url [1]
2. Click on button "Busy"
3. In less than 5 seconds: move mouse to yellow rectangle, hold middle mouse button,
    move mouse to green rectangle, release middle mouse button

AR:  Autoscrolling is active. The page is scrolling to the bottom
ER:  Autoscrolling should be canceled, because I released left mouse button on a different place

> [1] data:text/html,<title>Ready</title><script>function Busy() {document.title = Date.now() + ' ' + 'Busy';setTimeout(function () {var D = Date.now() + ( + I.value);while (Date.now() < D) {}document.title = Date.now() + ' ' + 'Ready';}, 0)}</script><button id="B" onclick="Busy()">Busy</button><br>Timeout:<input id="I" value="5000"> milliseconds<style>body{height:10000px}body::before, body::after{content:" ";position:fixed;left:200px;height:20px;width:20px;border:1px solid black;}body::before{top:100px;background:yellow;}body::after{top:250px;background:green;}</style>


Note:  I encounter this bug for a VERY long time in e10s and non-e10s modes

Comment 1

[Kartikaya Gupta (email:[e-mail])]

This looks to be purely an autoscroll bug, so moving this to the appropriate component.