1482692 - Hit testing on fixed items is wrong when zoomed in

Status: RESOLVED DUPLICATE of bug 1465616

(Core :: Panning and Zooming, defect)

Description

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

[Tracking Requested - why for this release]: usability/correctness regression

Go to a page with a fixed position element, e.g. a searchfox page. Zoom in. Then tap on the search field in the fixed header.

Expected: search field gets focus
Actual: tap ends up hitting whatever is behind the fixed header at that point.

Comment 1

[Jan Henning [:JanH]]

Just guessing, but might the position:fixed element changes from bug 1465616 (or more precisely one of its dependencies, since bug 1465616 has been backed out again) have caused this?

Comment 2

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

Quite likely, but it's not easy for me to verify at the moment because I need my laptop to run mozregression and doing that is incompatible with holding a baby that alternates between crying and sleeping :)

Comment 3

[David Durst [:ddurst]]

Bugs we can fix, babies we don't want to break. Can someone take this over for you?

Comment 4

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

If somebody (QA/softvision/anybody) can run mozregression on it we can probably back out whatever caused it. Or at least see if whoever landed the regressing patch can look into fixing it.

Comment 5

[Ian Moody [:Kwan] (UTC+1)]

Sounds similar to bug 1478614, which would make bug 1423011 the regressor.

Comment 6

[Julien Cristau [:jcristau]]

(In reply to Ian Moody [:Kwan] (UTC+0) from comment #5)
> Sounds similar to bug 1478614, which would make bug 1423011 the regressor.

Kashav, does that sound plausible?

Ioana, can your team confirm this with mozregression?

Comment 7

[Ioana Chiorean]

Yes, sure. Bogdan, can you look at it?

Comment 8

[Ioana Chiorean]

Sorry for the spam, just realized  after i pressed save changes that Bogdan is out. Oana?

Comment 9

[Oana Horvath [:ohorvath]]

Hello, 
Confirmed with mozregression that Bug 1423011 is the cause.

First bad build: 2018-07-12

Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=085cdfb90903d4985f0de1dc7786522d9fb45596&tochange=fe17acc6e291e54463db3ea82697c714ae5a4b27
 
DEBUG : Found commit message:
Bug 1423011 - Part 4: Fix for overflow-x:hidden test failures in the mochitest test_wheel_default_action.html. r=botond

Comment 10

[Botond Ballo [:botond]]

I can't reproduce this in the latest Fennec nightly. I believe it was fixed by bug 1465616.

Kats (or anyone else), please feel free to reopen if you're still seeing this in a recent nightly.

Comment 11

[Botond Ballo [:botond]]

(I guess DUPLICATE is the more appropriate resolution.)