Activating menu items creates permanent space between title bar and tabs

[Oxwivi]

This bug applies to all Firefox versions since Unity brought global menus. However, only Firefox is affected, I've not observed any other app with a similar issue.

What I expected:
 * Activating a menu item to simply display the relevant menu and cause no further interface changes

What happened instead:
 * Activating a menu item displays the relevant menu and introduces a space between the titlebar and tabs

The change is persistent as long as the window is open. Resizing or maximizing makes no difference. Enabling and activating menus from the title bar causes the exact same effect. Closing the window and reopening it from History's "Restore Closed Windows" removes the space. In other words, it does not affect newly opened windows.
---
AddonCompatCheckDisabled: False
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: virtouni 1649 F.... pulseaudio
BuildID: 20160425114621
Channel: Unavailable
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
InstallationDate: Installed on 2016-04-26 (5 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Locales: extensions.sqlite corrupt or missing
Package: firefox 46.0+build5-0ubuntu0.16.04.2
PackageArchitecture: amd64
PrefSources: prefs.js
ProcVersionSignature: Ubuntu 4.4.0-22.38-generic 4.4.8
Profiles: Profile0 (Default) - LastVersion=46.0/20160425114621 (In use)
RunningIncompatibleAddons: False
Tags: xenial
Themes: extensions.sqlite corrupt or missing
Uname: Linux 4.4.0-22-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 11/04/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68MDU Ver. F.0D
dmi.board.name: 30D8
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 83.0E
dmi.chassis.asset.tag: CNU73433WV
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68MDUVer.F.0D:bd11/04/2008:svnHewlett-Packard:pnHPCompaq6720s:pvrF.0D:rvnHewlett-Packard:rn30D8:rvrKBCVersion83.0E:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq 6720s
dmi.product.version: F.0D
dmi.sys.vendor: Hewlett-Packard

[Amr Ibrahim (amribrahim1987)]

Please run in terminal:

apport-collect 1576605

[Oxwivi (oxwivi)]

I don't understand. Do I do that after triggering the bug in any window? Or do it whether the bug is triggered or not?

[Amr Ibrahim (amribrahim1987)]

"apport-collect" is used to collect more information about your system and the affected package, then attach this information to this bug report so that developers could have sufficient information about this bug.
You can do "apport-collect 1576605" in a terminal window at any time.
In steps:
1- Open a terminal; search "terminal" in Dash
2- Type or paste: "apport-collect 1576605" inside the terminal (without the quotes)
3- Press "Enter"
4- Wait until it finishes; respond to any queries if necessary
5- Close the terminal

You could read more about filing bug reports in Ubuntu:
https://help.ubuntu.com/community/ReportingBugs#How_to_report_bugs

[Oxwivi (oxwivi)]

Let me repeat that question: do I do that after triggering the bug or not? I'm fully aware what apport-collect is and how to run it. What I'm asking is, do I do apport-collect after the bug has affected Firefox? Or does it not matter at all?

[Amr Ibrahim (amribrahim1987)]

No, it does not matter at all.

[Oxwivi (oxwivi)]

apport information

[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Oxwivi (oxwivi)]

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[Launchpad Janitor (janitor)]

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

[Alberto Salvia Novella (es20490446e)]

Please:

1. Provide a screen shot or video record of the issue.
2. Set status back to "confirmed".

[Launchpad Janitor (janitor)]

[Expired for firefox (Ubuntu) because there has been no activity for 60 days.]

[Pablo Lillia (gorlok)]

It affects me too. Ubuntu 16.04.1 (64-bit) with Unity. Please note: it's more visible with GTK dark themes. I'm using Arc Dark Theme. This happens with light themes too, but it's subtle with them. But with dark themes is very prominent.

Arc Dark Theme: https://github.com/horst3180/arc-theme
Firefox Arc Dark Theme: https://addons.mozilla.org/en-US/firefox/addon/arc-dark-theme/
Using NVIDIA binary driver 361.42 from nvidia-361. (GeForce GTX 960)