Public bug reported:

I had put the dock on the bottom of the screen and also set to hide 
automatically. 
The dock works fine as expected but there are sometimes (actually like 90% of 
the time) that it behaves weird when I try to access it with the mouse pointer, 
the dock starts to bounce quickly without stopping and then it's kind of hard 
to press the icons on it (when I'm lucky I can click the icon), other times I 
had to move away the pointer from the bottom and then move it back to access 
the dock. 
I made a video of it although it's very short but you can see for a brief of 
time how the dock starts to bounce.
I haven't installed new packages or applications that change the behaviour of 
the dock in any way.


tavoge@e6430s:~$ lsb_release -rd
Description:    Ubuntu 20.04 LTS
Release:        20.04


tavoge@e6430s:~$ apt-cache policy xorg
xorg:
  Instalados: 1:7.7+19ubuntu14
  Candidato:  1:7.7+19ubuntu14
  Tabla de versiĆ³n:
 *** 1:7.7+19ubuntu14 500
        500 http://mx.archive.ubuntu.com/ubuntu focal/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
Uname: Linux 5.4.0-33-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
BootLog: Error: [Errno 13] Permiso denegado: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun  3 11:40:48 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus: virtualbox, 6.1.6, 5.4.0-33-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 
09) (prog-if 00 [VGA controller])
   Subsystem: Dell 3rd Gen Core processor Graphics Controller [1028:057d]
InstallationDate: Installed on 2020-05-29 (5 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Dell Inc. Latitude E6430s
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-33-generic 
root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/30/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A21
dmi.board.name: 0XHTPW
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvrA21:bd11/30/2018:svnDellInc.:pnLatitudeE6430s:pvr01:rvnDellInc.:rn0XHTPW:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6430s
dmi.product.sku: Latitude E6430s
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal ubuntu

** Attachment added: "ubuntu dock bouncing crazy"
   
https://bugs.launchpad.net/bugs/1881941/+attachment/5380067/+files/WhatsApp%20Video%202020-06-03%20at%2012.23.40%20PM.mp4

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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1881941

Title:
  Ubuntu dock behaves crazy when hidden

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