** Attachment added: "My dual-screen Display settings."
   
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1873796/+attachment/5357132/+files/TwoScreenDisplaySettings.png

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https://bugs.launchpad.net/bugs/1873796

Title:
  Gnome apps menu not working with dual-screen on Ubuntu 20.04 using
  XWayland

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  I am using the pre-release Ubuntu 20.04 (updated on 2020-04-20) with
  Gnome and XWayland. I have a dual-screen setup with an additional
  monitor above the main one. The exactly same setup used to work on
  Ubuntu 19.10.

  When the top monitor is connected, the results of the "Show
  Applications" or Search functions are mostly hidden. It works
  correctly when I disconnect the top monitor. See attached screenshots.

  ```
  /org/gnome/mutter/experimental-features = ['scale-monitor-framebuffer']
  ```

  ```
  $ lsb_release -rd
  Description:  Ubuntu 20.04 LTS
  Release:      20.04
  ```

  ```
  $ xrandr --verbose
  Screen 0: minimum 16 x 16, current 1920 x 2160, maximum 32767 x 32767
  XWAYLAND0 connected 1920x1080+0+0 (0x24) normal (normal left inverted right x 
axis y axis) 640mm x 360mm
        Identifier: 0x21
        Timestamp:  22609
        Subpixel:   unknown
        Gamma:      1.0:1.0:1.0
        Brightness: 0.0
        Clones:    
        CRTC:       0
        CRTCs:      0
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        non-desktop: 0 
                supported: 0, 1
    1920x1080 (0x24) 173.000MHz -HSync +VSync *current +preferred
          h: width  1920 start 2048 end 2248 total 2576 skew    0 clock  
67.16KHz
          v: height 1080 start 1083 end 1088 total 1120           clock  59.96Hz
  XWAYLAND1 connected 1920x1080+0+1080 (0x24) normal (normal left inverted 
right x axis y axis) 340mm x 190mm
        Identifier: 0x23
        Timestamp:  22609
        Subpixel:   unknown
        Gamma:      1.0:1.0:1.0
        Brightness: 0.0
        Clones:    
        CRTC:       1
        CRTCs:      1
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        non-desktop: 0 
                supported: 0, 1
    1920x1080 (0x24) 173.000MHz -HSync +VSync *current +preferred
          h: width  1920 start 2048 end 2248 total 2576 skew    0 clock  
67.16KHz
          v: height 1080 start 1083 end 1088 total 1120           clock  59.96Hz
  ```

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: gnome-shell 3.36.1-5ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-24.28-generic 5.4.30
  Uname: Linux 5.4.0-24-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Apr 20 12:09:29 2020
  DisplayManager: gdm3
  InstallationDate: Installed on 2020-03-03 (48 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  RelatedPackageVersions: mutter-common 3.36.1-3ubuntu3
  SourcePackage: gnome-shell
  UpgradeStatus: Upgraded to focal on 2020-04-17 (2 days ago)

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