Horizontal lines show up when scrolling

[Guruprasad]

When scrolling in Transmission main window, 2 fixed horizontal lines show up on top of the scrolling content - 1 near the top and the other near the bottom. One reaching either end and trying to scroll further, the line on the corresponding end tries to move further towards the window center and goes back to its position once we stop scrolling.

Please see the attached screenshot showing the 2 lines.

I run an up-to-date installation of Ubuntu GNOME 15.10 amd64.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: transmission-gtk 2.84-1ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-25.30-generic 4.2.6
Uname: Linux 4.2.0-25-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME
Date: Sat Feb 6 01:35:13 2016
InstallationDate: Installed on 2015-12-18 (48 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: transmission
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Thomas Christensen (christensenthomas)]

Very annoying