[Bug 1875949] [NEW] Firefox ignores `--window` option

[Saverio Miroddi]

Public bug reported:

Firefox ignores the  `--window` option, when `--private-window` is
specified, an instance is running.

Instead, the behavior depends on an address being passed.

To reproduce:

- run `firefox --private-window &`
- run `firefox --window --private-window` -> a new window opens; this is ok
- run `firefox --window --private-window ubuntu.com` -> a tab opens in the latest window, which is not ok

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: firefox 75.0+build3-0ubuntu0.18.04.1
ProcVersionSignature: Ubuntu 5.3.0-51.44~18.04.2-generic 5.3.18
Uname: Linux 5.3.0-51-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  saverio    1746 F.... pulseaudio
BuildID: 20200403170909
Channel: Unavailable
CurrentDesktop: MATE
Date: Wed Apr 29 19:05:16 2020
DefaultProfileExtensions: extensions.sqlite corrupt or missing
DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
DefaultProfileLocales: extensions.sqlite corrupt or missing
DefaultProfilePrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:736
DefaultProfilePrefSources: /usr/lib/firefox/defaults/pref/all-ubuntumate.js
DefaultProfileThemes: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2020-04-29 (0 days ago)
InstallationMedia: Ubuntu-MATE 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
IpRoute:
 default via 10.0.2.2 dev enp0s3 proto dhcp metric 100 
 10.0.2.0/24 dev enp0s3 proto kernel scope link src 10.0.2.15 metric 100 
 169.254.0.0/16 dev enp0s3 scope link metric 1000
Profile0Extensions: extensions.sqlite corrupt or missing
Profile0IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile0Locales: extensions.sqlite corrupt or missing
Profile0PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:736
Profile0PrefSources:
 /usr/lib/firefox/defaults/pref/all-ubuntumate.js
 prefs.js
Profile0Themes: extensions.sqlite corrupt or missing
Profiles:
 Profile1 (Default) - LastVersion=None/None (Out of date)
 Profile0 - LastVersion=75.0/20200403170909 (In use)
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.family: Virtual Machine
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic

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Title:
  Firefox ignores `--window` option

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