Text windows render with text duplicated when scrolling in ambience theme

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Running Ubuntu 18.14 LTS, uname -a gives



Linux thomas-ThinkPad-W541 4.15.0-20-generic
#21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux


The "ambience" theme seem to be broken on my machine.



My problem is that when I scroll in text-boxes, the text is written on top of the existing text. That means that I can read the top fifteen lines in "update manager" details, but once I select something else in the list, it becomes unreadable, as the text is rendered on top of the old data.



The same problem manifests itself in the built-in text editor, and it's a bit easier to show it there. Here, I've opened a file:
first open of the file
As is apparent, the background inside the file edit window has copied the background behind it (I've moved it slightly to the right so you can see the file selector behind it).



After scrolling a bit, the problem becomes even more obvious:
after scrolling a bit up and down
As you can see, all the text is garbled, because every letter on every line "stays behind" after rendering.



If I switch to the Adwaita theme, it stops doing this, but it returns as soon as I switch back. I use the gnome-tweaks program to switch themes.



So, where do I look to fix this? My google-fu have failed me, so I might be alone with the problem for all I know...







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    up vote
    0
    down vote

    favorite












    Running Ubuntu 18.14 LTS, uname -a gives



    Linux thomas-ThinkPad-W541 4.15.0-20-generic
    #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux


    The "ambience" theme seem to be broken on my machine.



    My problem is that when I scroll in text-boxes, the text is written on top of the existing text. That means that I can read the top fifteen lines in "update manager" details, but once I select something else in the list, it becomes unreadable, as the text is rendered on top of the old data.



    The same problem manifests itself in the built-in text editor, and it's a bit easier to show it there. Here, I've opened a file:
    first open of the file
    As is apparent, the background inside the file edit window has copied the background behind it (I've moved it slightly to the right so you can see the file selector behind it).



    After scrolling a bit, the problem becomes even more obvious:
    after scrolling a bit up and down
    As you can see, all the text is garbled, because every letter on every line "stays behind" after rendering.



    If I switch to the Adwaita theme, it stops doing this, but it returns as soon as I switch back. I use the gnome-tweaks program to switch themes.



    So, where do I look to fix this? My google-fu have failed me, so I might be alone with the problem for all I know...







    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Running Ubuntu 18.14 LTS, uname -a gives



      Linux thomas-ThinkPad-W541 4.15.0-20-generic
      #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux


      The "ambience" theme seem to be broken on my machine.



      My problem is that when I scroll in text-boxes, the text is written on top of the existing text. That means that I can read the top fifteen lines in "update manager" details, but once I select something else in the list, it becomes unreadable, as the text is rendered on top of the old data.



      The same problem manifests itself in the built-in text editor, and it's a bit easier to show it there. Here, I've opened a file:
      first open of the file
      As is apparent, the background inside the file edit window has copied the background behind it (I've moved it slightly to the right so you can see the file selector behind it).



      After scrolling a bit, the problem becomes even more obvious:
      after scrolling a bit up and down
      As you can see, all the text is garbled, because every letter on every line "stays behind" after rendering.



      If I switch to the Adwaita theme, it stops doing this, but it returns as soon as I switch back. I use the gnome-tweaks program to switch themes.



      So, where do I look to fix this? My google-fu have failed me, so I might be alone with the problem for all I know...







      share|improve this question














      Running Ubuntu 18.14 LTS, uname -a gives



      Linux thomas-ThinkPad-W541 4.15.0-20-generic
      #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux


      The "ambience" theme seem to be broken on my machine.



      My problem is that when I scroll in text-boxes, the text is written on top of the existing text. That means that I can read the top fifteen lines in "update manager" details, but once I select something else in the list, it becomes unreadable, as the text is rendered on top of the old data.



      The same problem manifests itself in the built-in text editor, and it's a bit easier to show it there. Here, I've opened a file:
      first open of the file
      As is apparent, the background inside the file edit window has copied the background behind it (I've moved it slightly to the right so you can see the file selector behind it).



      After scrolling a bit, the problem becomes even more obvious:
      after scrolling a bit up and down
      As you can see, all the text is garbled, because every letter on every line "stays behind" after rendering.



      If I switch to the Adwaita theme, it stops doing this, but it returns as soon as I switch back. I use the gnome-tweaks program to switch themes.



      So, where do I look to fix this? My google-fu have failed me, so I might be alone with the problem for all I know...









      share|improve this question













      share|improve this question




      share|improve this question








      edited May 18 at 15:17









      Android Dev

      10.4k63257




      10.4k63257










      asked May 18 at 15:11









      Thomas

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