Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 795463

Summary:	menu hides when mouse cursor moves to next menuitem
Product:	Red Hat Enterprise Linux 6	Reporter:	Aleš Mareček <amarecek>
Component:	firefox	Assignee:	Martin Stransky <stransky>
Status:	CLOSED WONTFIX	QA Contact:	Desktop QE <desktop-qa-list>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	6.2	CC:	ryan.stanyan, stransky, tpelka
Target Milestone:	rc	Keywords:	Regression
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-06-06 11:06:13 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Aleš Mareček 2012-02-20 15:52:20 UTC

Description of problem:
There is a problem with menu of Firefox (and also Thunderbird) when mouse cursor moves to next menuitem - it hides. It is possible to select menuitem with arrows of keyboard but not with mouse. I ran it via vnc, versions of 3.x.y work well.

Version-Release number of selected component (if applicable):
firefox-10.0.1-1.el6_2, thunderbird-10.0.1-3.el6_2 (and also 5_8 versions)

How reproducible:
Always

Steps to Reproduce:
1. Install FF10
2. Connect computer via VNC
3. Try to click on some menuitem inside menu "File' / 'Edit' / ...
  
Actual results:
Menu hides.

Expected results:
Possible to click on any menuitem.

Additional info:
I also got an error: "Failed to create drawable", but FF10 and TB10 have been installed with any problem.

Comment 5 Ryan Stanyan 2012-04-06 01:04:32 UTC

I seem to be having a similar problem with 10.0.3 on RHEL 6.2.  After not using Firefox for a while using the drop-down menus disappear when you try to select them.  I can stop this behaviour temporarily when I minimize and restore the window.

I am suspecting this might have something to do with hardware acceleration since I can't duplicate it when desktop effects are off.  Firefox also has a hardware acceleration feature that you can access by the following:

Edit > Preferences > Advanced > General > Use hardware acceleration when available

I'm going to try this out and hopefully it will solve what I'm seeing.

I don't use Thunderbird but there might be something similar there.