1194067 - [GTK3] Cannot scroll in browser when window is not in focus

Status: RESOLVED WORKSFORME

(Core :: Widget: Gtk, defect)

Description

[freakabcd]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:43.0) Gecko/20100101 Firefox/43.0
Build ID: 20150812030206

Steps to reproduce:

1. Open a page which has vertical scroll bar in a FF tab
2. Click on any other application you have open to make the FF window lose focus
3. Bring mouse over the FF window (the content pane) and scroll up/down


Actual results:

FF window does not receive and/or process the mouse wheel scroll events; the page does not scroll.


Expected results:

FF window should receive and process the mouse wheel scroll events; the page should scroll.

Comment 1

[freakabcd]

I have run mozregression and determined this:

14:10.86 LOG: MainThread Bisector INFO Oh noes, no (more) inbound revisions :(
14:10.86 LOG: MainThread Bisector INFO Last good revision: 1ee54e043b9b
14:10.86 LOG: MainThread Bisector INFO First bad revision: 939320b957c5
14:10.86 LOG: MainThread Bisector INFO Pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=1ee54e043b9b&tochange=939320b957c5

That change corresponds to the switch to gtk3 builds by default.

Comment 2

[freakabcd]

It is interesting to also note that other gtk3 applications (gitg, gedit, etc.) on my system can receive and process mouse wheel scroll events.

When the Firefox window has many tabs and the left/right arrows indicating tabs can be scrolled is shown, the very same problem manifests, i.e. one cannot scroll over the top of the tabs when the FF window is not in focus.

Comment 4

[AnAkkk]

This is a duplicate of https://bugzilla.mozilla.org/show_bug.cgi?id=1182700

Comment 6

[Karl Tomlinson (:karlt)]

Yes, symptoms sound similar, but the first paragraph of comment 2 implies that it is different.

Please reopen if this was not addressed by https://hg.mozilla.org/mozilla-central/rev/e7017f284e77

Comment 7

[Liviu Cirdei]

Thanks Karl for your observation. The bug is now reopened.

Comment 8

[Tracy Walker [:tracy]]

works for me on Ubuntu 16.04 with Nightly 51.0a1, 20160823030224, even when tab over flow is active.