1207420 - incorrect positioning of OMTA-transform-animated element

Status: RESOLVED DUPLICATE of bug 1206418

(Core :: CSS Parsing and Computation, defect)

Description

[Cameron McCormack (:heycam)]

Attachment: test

With OMTA turned on, the animation in this attachment sometimes places the <div> at the very top of the page and sometimes places at its original vertical position.  When I jiggle the mouse around, I can get this effect, but if I leave the mouse alone for a while it settles in to its expected vertical position.

I can reproduce this on both my Linux and OS X machine.

Comment 1

[Cameron McCormack (:heycam)]

Attachment: video showing the problem

Comment 2

[Cameron McCormack (:heycam)]

Last good revision: 7641104770a80015e63597b58cb312fefcbd9ab4
First bad revision: 621ab19e86db28c38bbbf9119fbf6831ea344c54
Pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=7641104770a80015e63597b58cb312fefcbd9ab4&tochange=621ab19e86db28c38bbbf9119fbf6831ea344c54

Which just has bug 1097464.  Thinker, is this likely to be a dupe of bug 1206418?

Comment 3

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

[Tracking Requested - why for this release]:  Web compatibility regression

Comment 4

[Thinker Li [:sinker]]

Cameron, right!  There are several dupe of this bug.  I will open a new bug and dup all other bugs.

Comment 5

[Liz Henry (:lizzard) (relman/hg->git project)]

I'll track this for now. If it's a duplicate, please mark it as such!

Comment 6

[Thinker Li [:sinker]]

Attachment: Improve GetBounds() to avoid recomputing every time

Comment 7

[Pulsebot]

https://hg.mozilla.org/integration/mozilla-inbound/rev/160c4484f0a2

Comment 8

[Pulsebot]

Backout:
https://hg.mozilla.org/integration/mozilla-inbound/rev/ffe864d77b17