Public bug reported:

This bug is present for me in both X11 and Wayland sessions.

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System
-> About Ubuntu

Description:    Ubuntu 22.04 LTS
Release:        22.04

2) The version of the package you are using, via 'apt-cache policy
pkgname' or by checking in Software Center

mutter:
  Installed: 42.0-3ubuntu2
  Candidate: 42.0-3ubuntu2
  Version table:
 *** 42.0-3ubuntu2 500
        500 http://ca.archive.ubuntu.com/ubuntu jammy/universe amd64 Packages
        100 /var/lib/dpkg/status

3) What you expected to happen

When beginning a selection on the desktop with the mouse (by beginning a
drag on the wallpaper and not on the dock, icons, etc.), I expect its
rectangle to instantly be visible once it has a non-zero width and
height.

4) What happened instead

What I expect only happens if I begin the selection more than the width
of the dock to the right of the right edge of the dock (my dock is
positioned on the left) as shown below ('x' marks the beginning of the
selection):

+-------+-------+---------------...
| Dock  | Same  |
|       | width |  x
|       | as    |
|       | dock  |

However, if I begin the selection in the 'Same width as dock' region,
the selection rectangle is only visible when my mouse moves to the right
of the 'Same width as dock' region. Moving it back in hides the
rectangle again. A screen recording of this behaviour is attached to
this bug report. Also, if I begin the selection in the 'Same width as
dock' region and drag towards a display to the left of the display where
the selection began, the selection rectangle is only visible on the
display to the left while remaining invisible on the original display.

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


** Tags: desktop jammy

** Attachment added: "a screen recording showing how wide a selection must be 
to be visible when begun to the right of the dock on the left"
   
https://bugs.launchpad.net/bugs/1971055/+attachment/5585503/+files/abnormal-selection.mp4

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https://bugs.launchpad.net/bugs/1971055

Title:
  thin selections started beside dock are invisible

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