[Bug 1811105] [NEW] Browser hangs when 'open with' dialog opens.

[Guilherme]

Public bug reported:

1) Ubuntu 18.04.1 LTS x86_64 with GNOME 3.28.3.
2) Firefox: Installed: 64.0+build3-0ubuntu0.18.04.1
3) Dialog box 'open as' to respond to click events in elements and whole browser not get inoperable.
4) Dialog box 'open as' hangs, gets inoperable to click commands (close, cancel, ok, save file) when trying to open some attacked file.

My browser started to hang when the dialog 'open as' appears. It's very
useful since it quickly opens an attached file from gmail or browsing
pdf/doc files.

When the dialog opens, both the dialog and the browser window get
extremely slow and i have to click several times for the dialog to
close. No other button responds and sometimes the crash dialog asks if i
want to force quit or wait.

I'm having this problem for two weeks now and got so annoyed that sadly
had to switch back to chrome. This is a very nice feature that doesn't
work on said browser.

I already uninstalled/installed, cleaned data and installed a nightly
build without success. I suspect it's something related to window
manager or nautilus.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: firefox 64.0+build3-0ubuntu0.18.04.1
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  guilherme   3261 F.... pulseaudio
BuildID: 20181207224003
Channel: Unavailable
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan  9 13:28:59 2019
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet dhcp
IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
InstallationDate: Installed on 2016-11-14 (785 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IpRoute:
 default via 192.168.0.1 dev wlp3s0 proto dhcp metric 600 
 169.254.0.0/16 dev wlp3s0 scope link metric 1000 
 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown 
 192.168.0.0/24 dev wlp3s0 proto kernel scope link src 192.168.0.104 metric 600
Locales: extensions.sqlite corrupt or missing
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=64.0/20181207224003
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: Upgraded to bionic on 2018-08-21 (140 days ago)
dmi.bios.date: 11/25/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 234
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: K45A
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No  Asset  Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr234:bd11/25/2014:svnASUSTeKCOMPUTERINC.:pnK45A:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnK45A:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: K
dmi.product.name: K45A
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

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


** Tags: amd64 apport-bug bionic third-party-packages

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Title:
  Browser hangs when 'open with' dialog opens.

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