[Bug 1581208] [NEW] "Choose file from local disk" window keeps selecting with rectangle selection

[Piotr]

Public bug reported:

Whenever I try to choose some files to upload from my local disk, the
window that shows up doesn't let me choose files. It's like my left
mouse button was always pressed and it's showing rectangular selection.
Also I'm not able to press column headers to sort by. This started to
happen after I upgraded to latest firefox 46. I did "refresh" firefox
after upgrade.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 46.0+build5-0ubuntu0.14.04.2
ProcVersionSignature: Ubuntu 3.13.0-86.130-generic 3.13.11-ckt39
Uname: Linux 3.13.0-86-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  peter      2664 F.... pulseaudio
BuildID: 20160425115534
Channel: Unavailable
CurrentDesktop: KDE
Date: Thu May 12 22:15:59 2016
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 2016-01-25 (108 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
IpRoute:
 default via 192.168.0.1 dev wlan0  proto static 
 192.168.0.0/24 dev wlan0  proto kernel  scope link  src 192.168.0.14  metric 9
Locales: extensions.sqlite corrupt or missing
Plugins:
 Java(TM) Plug-in 11.45.2 - [HomeDir]/jdk1.8.0_45/jre/lib/amd64/libnpjp2.so
 Shockwave Flash - [HomeDir]/.mozilla/plugins/libflashplayer.so
PrefSources:
 prefs.js
 [Profile]/extensions/{3d7eb24f-2740-49df-8937-200b1cc08f8a}/defaults/preferences/flashblock.js
ProcEnviron:
 LANGUAGE=pl
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=46.0/20160425115534 (In use)
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/07/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0NJT03
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA12:bd09/07/2012:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0NJT03:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L502X
dmi.sys.vendor: Dell Inc.

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


** Tags: amd64 apport-bug trusty

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https://bugs.launchpad.net/bugs/1581208

Title:
  "Choose file from local disk" window keeps selecting with rectangle
  selection

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