Browser launchs as if I pressed "Alt" buttom to see Firefox menu.

[Compiler]

Proof: https://imgur.com/NTn5JsQ

Note: I am not even pressing the "Alt" button. But still, I see those menus as if I have pressed one.

I am wondering what is really happening.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: firefox 78.0.2+build2-0ubuntu0.20.04.1
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
AddonCompatCheckDisabled: False
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: pranav 3388 F.... pulseaudio
 /dev/snd/controlC0: pranav 3388 F.... pulseaudio
BuildID: 20200708170202
CasperMD5CheckResult: skip
Channel: Unavailable
CurrentDesktop: ubuntu:GNOME
Date: Wed Jul 29 17:02:18 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:730
DefaultProfileThemes: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
InstallationDate: Installed on 2020-02-16 (164 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
IpRoute:
 default via 192.168.1.254 dev wlp3s0 proto dhcp metric 600
 169.254.0.0/16 dev virbr0 scope link metric 1000 linkdown
 192.168.1.0/24 dev wlp3s0 proto kernel scope link src 192.168.1.101 metric 600
 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
MostRecentCrashID: bp-542c71c3-9095-494c-be88-743830200725
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:730
Profile0PrefSources: prefs.js
Profile0Themes: extensions.sqlite corrupt or missing
Profiles:
 Profile1 (Default) - LastVersion=None/None (Out of date)
 Profile0 - LastVersion=78.0.2/20200708170202
RunningIncompatibleAddons: False
SourcePackage: firefox
SubmittedCrashIDs:
 bp-542c71c3-9095-494c-be88-743830200725
 bp-66bc10ff-1bbc-4f42-89e8-bab320200722
 bp-449b8904-e652-464d-ac12-647ed0200721
 bp-6a94ba32-2c84-41d9-9e20-4435a0200718
 bp-291269f8-93eb-462e-a38b-c9d9e0200711
UpgradeStatus: Upgraded to focal on 2020-05-08 (82 days ago)
dmi.bios.date: 05/28/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 0FFJC4
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A10
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd05/28/2019:svnDellInc.:pnInspiron5548:pvrA10:rvnDellInc.:rn0FFJC4:rvrA00:cvnDellInc.:ct8:cvrA10:
dmi.product.name: Inspiron 5548
dmi.product.sku: 0641
dmi.product.version: A10
dmi.sys.vendor: Dell Inc.

[Compiler (pranav.bhattarai)]

Here is another proof where I am relaunching Firefox by exiting Firefox:

https://webmshare.com/wZLEG