I can't reproduce this bug in Files 3.26.3-0ubuntu4 (in Ubuntu 18.04) so I'm going to assume this has been fixed, please re-open the bug if you can reproduce the problem.
** Changed in: nautilus (Ubuntu) Status: New => Fix Released -- 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/1731354 Title: No response to scroll events on left navigation panel Status in nautilus package in Ubuntu: Fix Released Bug description: To replicate: (only confirmed with touchpad: I don't currently have a mouse to test it) Position the mouse cursor over the navigation panel on the left hand side of a nautilus window, and attempt to scroll up or down. Expected results: The left panel should scroll up or down as appropriate for the scroll event. Actual results: None. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: nautilus 1:3.26.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Nov 10 12:14:21 2017 EcryptfsInUse: Yes InstallationDate: Installed on 2017-08-15 (86 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) SourcePackage: nautilus UpgradeStatus: Upgraded to artful on 2017-09-14 (56 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1731354/+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