1074894 - Context menu and auto-password functionality are lost

Status: RESOLVED DUPLICATE of bug 1068189

(Firefox :: Untriaged, defect)

Description

[Rudolf]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0
Build ID: 20140923175406

Steps to reproduce:

Update to Firefox (32bit) 32.0.3
Update to Nightly (64bit) 35.0a1
Reboot Windows 8.1


Actual results:

When starting Firefox 32.0.3 some common functions are lost:
a) Context menu does not work (right click with mouse to open a link in a new tab, show source or something else).
c) Also clicking the mouse-wheel does not do anything (open the clicked link in a new tab).
c) Saved usernames+passwords are not automatically inserted in the affected page (but are still present in the password manager). If logging of from Facebook/Youtube/Google saved data is not suggested, even if typing the 1st character of the username.
d) Combobox dropdown is not opened when clicking on the arrow (or Alt+Down in Windows). However the contents of a focused combobox can be selected with Up+Down.
(maybe there are some more issues that I have not figured out yet)

Checked config:
dom.event.contextmenu.enabled=true


NOTE: I've created a single bug for all issues because it may be a single cause (e.g. conflict with nightly).

TRY 1: I've uninstalled Nightly (that was used without problems for several months), but the problems still persist. Another computer, without Nightly installed, works normally.

TRY 2: unfortunately a repair-function for Firefox does not exist in the Windows Control-Panel. So I've re-installed (without uninstalling) Firefox and rebootet the system. The problems still persist.


Expected results:

Right-click on a page should open the context menu.

Saved username/password should be suggested at least when typing the 1st character of the username.

Combobox should open when clicking on it.

Comment 1

[Rudolf]

After examining all things in more detail (a lot of developer tool functionality is also lost) I've found the cause:

E10S mode was enabled in Nightly (64bit) and is also used in Firefox 32bit, but does not work here.

So it's strongly recommended to keep E10S mode disabled if using Firefox and Nightly together!


FIX: disable E10S mode in Nightly!

Comment 2

[Rudolf]

Relevant for finding the cause was the "Color pipette" tool, which displayed contents outside of the HTML area, but was not able to see what the content of the HTML area contains. So I remembered that I've changed a related setting...