As possible workaround try setting ui.context_menus.after_mouseup to 'true' in about:config.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1808352 Title: Context menus spawn in a way that causes unintended clicks when using Firefox CSD Status in firefox package in Ubuntu: New Bug description: HOW TO REPRODUCE 1 - First, open Firefox, enable Client Side Decoration, restart the program. 2 - Open some webpage, make sure you navigate a bit, leaving behind pages that can be returned to. 3 - Then right click anywhere on the current page. On my system, the context menu 'back' button appears right beneath the mouse cursor, and a click is automatically inserted there, making the page 'go back' everytime you right click with the mouse. Running Xubuntu 18.04.1 LTS Firefox 64.0 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: firefox 64.0+build3-0ubuntu0.18.04.1 ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18 Uname: Linux 4.15.0-42-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: dsilva 1420 F.... pulseaudio /dev/snd/controlC0: dsilva 1420 F.... pulseaudio BuildID: 20181207224003 Channel: Unavailable CurrentDesktop: XFCE Date: Thu Dec 13 12:35:17 2018 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 2018-12-13 (0 days ago) InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) IpRoute: default via 10.0.0.1 dev wlp6s0 proto dhcp metric 600 10.0.0.0/24 dev wlp6s0 proto kernel scope link src 10.0.0.102 metric 600 169.254.0.0/16 dev wlp6s0 scope link metric 1000 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: No upgrade log present (probably fresh install) dmi.bios.date: 09/27/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: A16 dmi.board.name: 09WGNT dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA16:bd09/27/2018:svnDellInc.:pnInspiron5458:pvr:rvnDellInc.:rn09WGNT:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Inspiron 5458 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1808352/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
