display updates are erroneous during scrolling after starting search

[Karl-Philipp Richter]

Display updates are errornous during scrolling after starting search when using LXDE desktop, see attached screenshot for details.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gedit 3.22.1-1ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.7-0ubuntu3.1
Architecture: amd64
CurrentDesktop: LXDE
Date: Sat Oct 28 13:01:06 2017
InstallationDate: Installed on 2015-12-12 (685 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: gedit
UpgradeStatus: Upgraded to artful on 2017-10-19 (8 days ago)

[Karl-Philipp Richter (krichter722)]

Meanwhile I experience the same issue in `meld` and `pluma`.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 17.10 (artful) reached end-of-life on July 19, 2018.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.