[Bug 1931368] [NEW] Visuals temporarily resets to earlier state

[LarsIvarIgesund]

Public bug reported:

I upgraded to Kubuntu 21.04 from 20.10 two days ago. Since then,
whenever I do something (type or use mouse/touchpad) I have this issue
where the visuals I see seems to revert to an earlier (cached?) state
for a very short while. E.g. (just observed on the previous line) I am
writing wherever (console, here, ...), and after having written a word
or new character, I for a short while (it seems that is mostly until the
next input event, so for example often I have to wiggle the mouse), I
see the state a very short while ago, e.g. before I wrote the last two
letters, then gets back to actual state. This creates a very annoying
jumping effect. I have also seen it in mouse driven operations, e.g.
closing an image in Twitter via the X the image disappearing, coming
back, then finally properly disappearing, or sorting lists by clicking
sort indicators at the top reverting sorting for a short while.

I chose the plasmashell app, since ubuntu-bug more or less requires an
application/package, but I just note that this issue seems to generally
be present on all aspects of my desktop - all applications and desktop
decorations. But it is most disruptive when I work/code using vim.

I am on a Dell Precision 5530, with Intel graphics enabled.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: plasma-workspace 4:5.21.4-0ubuntu1
ProcVersionSignature: Ubuntu 5.11.0-18.19-generic 5.11.17
Uname: Linux 5.11.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu65.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Wed Jun  9 08:56:35 2021
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-osp1-20171027-1
ExecutablePath: /usr/bin/plasmashell
InstallationDate: Installed on 2018-09-11 (1001 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20171027-10:57
SourcePackage: plasma-workspace
UpgradeStatus: Upgraded to hirsute on 2021-06-06 (2 days ago)

** Affects: plasma-workspace (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug hirsute

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https://bugs.launchpad.net/bugs/1931368

Title:
  Visuals temporarily resets to earlier state

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