I have also experienced this issue on my Ubuntu 20.04 Installation, and the only method to resolve is to restart the computer. The method stated by dmitry does not work for me.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/1787930 Title: Bookmark is dragging when clicked once Status in nautilus package in Ubuntu: Invalid Bug description: Hi everyone! I have just upgraded my 16.04 Ubuntu to 18.04.1 Ubuntu. I have added bookmarks in the left panel of my Nautilus that I frequently use for my work, but when I left-click once on any of them the bookmark is dragging together with the mouse cursor that is changed to a "hand" with "+". Destination of the bookmark is also opening. But I have to click ESC on the keyboard to get rid of the dragging feature OR I have to click again on the left panel to return the bookmark on its place. It is quite annoying... Thank you for any help! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: nautilus 1:3.26.3-0ubuntu4 ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18 Uname: Linux 4.15.0-32-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Aug 20 13:59:05 2018 InstallationDate: Installed on 2016-11-30 (627 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=ru_RU.UTF-8 SHELL=/bin/bash SourcePackage: nautilus UpgradeStatus: No upgrade log present (probably fresh install) usr_lib_nautilus: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1787930/+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