Right click with mouse opens context menu, but it disappears on moving the cursor

[david sulam]

Binary package hint: firefox

...

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: firefox 4.0.1+build1+nobinonly-0ubuntu0.11.04.1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
Date: Thu May 19 16:59:31 2011
FirefoxPackages:
 firefox 4.0.1+build1+nobinonly-0ubuntu0.11.04.1
 flashplugin-installer 10.3.181.14ubuntu0.11.04.1
 adobe-flashplugin N/A
 icedtea-plugin 1.1~20110420-0ubuntu1
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox
UpgradeStatus: Upgraded to natty on 2011-04-30 (19 days ago)

[Bruno Santos (bsantos)]

Could this be something like bug #781815? Can you describe some steps to reproduce the problem? I'm having similar issues since upgrading to 11.04, but they are similar to #781815, yet this bug describes something that also happens in the same situation as #781815

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sam_ (and-sam)]

Possibly dupe Bug #868968
Still the case with Oneiric. Bug #858745

[Guillaume Lanquepin-Chesnais (guyomel)]

I have similar problem with both drop down boxes and context menu on Natty and Oneiric. I figured out that open and close the preference windows fix this weird behavior.

How can we investigate this issue?

[Justyn Butler (justyn)]

I have the same problem, that the context menu disappears as soon as I move the cursor.

I can also confirm that like guyomel above, if I open and close the preferences menu the problem is temporarily fixed. I expect there are other actions that will also "fix" the issue but I have not yet worked out what they are.

At this point I haven't worked out what actually induces the bug, so it's hard to do more testing.

[AndresClari (andresclari)]

I'm noticing this behavior after removing the repos Flash and manually installing 64 bit Flash 11 from adobe's tar file. Also I'm forcing the hardware acceleration on Flash itself. Looks like the flash window might by causing issues with the context menu window.