Massive redraw-errors with latest version of xfce4

[Thomas Schweikle]

Updated to latest xfce4-suite. Since then massive redraw errors are seen:
- after closing windows, the window stays on screen
- after closing dialogs, these stay on screen
- moving windows around the window gets painted multiple times while moved.
  This "tail" stays on screen.
- marking an area on screen hitting a screen boundary, the marked area stays on screen even if I start a new area.
- after login the login-screen stays on screen until it is, partly, overwritten by applications started after login.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: xfce4-session 4.16.0-1ubuntu2
ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7
Uname: Linux 5.11.0-13-generic x86_64
ApportVersion: 2.20.11-0ubuntu61
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Wed Mar 31 17:10:12 2021
InstallationDate: Installed on 2019-09-09 (568 days ago)
InstallationMedia: Xubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
ProcEnviron:
 LANGUAGE=de_DE
 TERM=screen
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: xfce4-session
UpgradeStatus: No upgrade log present (probably fresh install)

[Thomas Schweikle (tps)]

Solved upstream with later versions -- depended on graphics driver too.