What causes an issue with desktop elements losing focus when I move my mouse cursor on the left and top screen edges?

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I'm trying to investigate this issue for some time now. I'm using Xubuntu and I've noticed that Whisker Menu icon is blinking when I move my mouse cursor on the left and top screen edges, but it behaves normally when I drag it on the bottom and right edges. Not only panel plugins/elements are affected by this, but also other applications, for example Plank.



You can see the issue on this video: https://youtu.be/YXmFXFV_ONQ



Issue occurs on Ubuntu 18.04 (GNOME), Xubuntu, Ubuntu MATE and some other distributions like Manjaro Xfce. EDIT: Kubuntu is also affected.



More details (and videos showing this issue) are here: https://forum.xfce.org/viewtopic.php?pid=48257



Please help me to kill that nasty bug, it's been on my system for a year now, I've noticed it on Xubuntu 17.04. I don't know where exactly to submit this bug, I previously submitted it wrongly on the Xfce's Bugzilla, but this issue is not Xfce specific, now I know that.



Here are some other videos showing this issue:
Ubuntu MATE - https://streamable.com/ee9sk
Kubuntu - https://streamable.com/dyqur
Xubuntu - https://youtu.be/UY4ZuxsPifw?t=15s







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    up vote
    0
    down vote

    favorite
    1












    I'm trying to investigate this issue for some time now. I'm using Xubuntu and I've noticed that Whisker Menu icon is blinking when I move my mouse cursor on the left and top screen edges, but it behaves normally when I drag it on the bottom and right edges. Not only panel plugins/elements are affected by this, but also other applications, for example Plank.



    You can see the issue on this video: https://youtu.be/YXmFXFV_ONQ



    Issue occurs on Ubuntu 18.04 (GNOME), Xubuntu, Ubuntu MATE and some other distributions like Manjaro Xfce. EDIT: Kubuntu is also affected.



    More details (and videos showing this issue) are here: https://forum.xfce.org/viewtopic.php?pid=48257



    Please help me to kill that nasty bug, it's been on my system for a year now, I've noticed it on Xubuntu 17.04. I don't know where exactly to submit this bug, I previously submitted it wrongly on the Xfce's Bugzilla, but this issue is not Xfce specific, now I know that.



    Here are some other videos showing this issue:
    Ubuntu MATE - https://streamable.com/ee9sk
    Kubuntu - https://streamable.com/dyqur
    Xubuntu - https://youtu.be/UY4ZuxsPifw?t=15s







    share|improve this question
























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      I'm trying to investigate this issue for some time now. I'm using Xubuntu and I've noticed that Whisker Menu icon is blinking when I move my mouse cursor on the left and top screen edges, but it behaves normally when I drag it on the bottom and right edges. Not only panel plugins/elements are affected by this, but also other applications, for example Plank.



      You can see the issue on this video: https://youtu.be/YXmFXFV_ONQ



      Issue occurs on Ubuntu 18.04 (GNOME), Xubuntu, Ubuntu MATE and some other distributions like Manjaro Xfce. EDIT: Kubuntu is also affected.



      More details (and videos showing this issue) are here: https://forum.xfce.org/viewtopic.php?pid=48257



      Please help me to kill that nasty bug, it's been on my system for a year now, I've noticed it on Xubuntu 17.04. I don't know where exactly to submit this bug, I previously submitted it wrongly on the Xfce's Bugzilla, but this issue is not Xfce specific, now I know that.



      Here are some other videos showing this issue:
      Ubuntu MATE - https://streamable.com/ee9sk
      Kubuntu - https://streamable.com/dyqur
      Xubuntu - https://youtu.be/UY4ZuxsPifw?t=15s







      share|improve this question














      I'm trying to investigate this issue for some time now. I'm using Xubuntu and I've noticed that Whisker Menu icon is blinking when I move my mouse cursor on the left and top screen edges, but it behaves normally when I drag it on the bottom and right edges. Not only panel plugins/elements are affected by this, but also other applications, for example Plank.



      You can see the issue on this video: https://youtu.be/YXmFXFV_ONQ



      Issue occurs on Ubuntu 18.04 (GNOME), Xubuntu, Ubuntu MATE and some other distributions like Manjaro Xfce. EDIT: Kubuntu is also affected.



      More details (and videos showing this issue) are here: https://forum.xfce.org/viewtopic.php?pid=48257



      Please help me to kill that nasty bug, it's been on my system for a year now, I've noticed it on Xubuntu 17.04. I don't know where exactly to submit this bug, I previously submitted it wrongly on the Xfce's Bugzilla, but this issue is not Xfce specific, now I know that.



      Here are some other videos showing this issue:
      Ubuntu MATE - https://streamable.com/ee9sk
      Kubuntu - https://streamable.com/dyqur
      Xubuntu - https://youtu.be/UY4ZuxsPifw?t=15s









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      edited May 9 at 14:02

























      asked May 9 at 13:35









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