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Screen tears, invalid background superimposed

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FF 66 running on Fedora 29 KDE spin.

See the attached sceen shot. When I first open FF in maximized mode, the screen tears in the middle. Also, it displays a part of the screen that completely does not belong to Firefox (in the attached example, it is from the Thunderbird screen which is now background). The minimize/maximize/close buttons shown belong to Firefox, not Thunderbird.

If I resize FF using the buttons, then maximize again, it displays correctly.

Weird, huh? JimR

FF 66 running on Fedora 29 KDE spin. See the attached sceen shot. When I first open FF in maximized mode, the screen tears in the middle. Also, it displays a part of the screen that completely does not belong to Firefox (in the attached example, it is from the Thunderbird screen which is now background). The minimize/maximize/close buttons shown belong to Firefox, not Thunderbird. If I resize FF using the buttons, then maximize again, it displays correctly. Weird, huh? JimR
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Separate Security Issue: Update your Flash Player or remove it.

Flash Player Version 32.0.0.156

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

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Yderligere systemdetaljer

Installerede plugins

  • Shockwave Flash 30.0 r0

Program

  • User Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0

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FredMcD
  • Top 10 Contributor
4259 løsninger 59635 svar

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Separate Security Issue: Update your Flash Player or remove it.

Flash Player Version 32.0.0.156

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

'''Separate Security Issue:''' Update your Flash Player or remove it. Flash Player '''Version 32.0.0.156 ''' https://get.adobe.com/flashplayer/ Direct link scans current system and browser '''Note: Other software''' is offered in the download. <Windows Only> https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) '''Note: Other software''' is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration
FredMcD
  • Top 10 Contributor
4259 løsninger 59635 svar

Is this with many websites, some, a few?

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Is this with many websites, some, a few? [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode] {web link} A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Is the problem still there?
cor-el
  • Top 10 Contributor
  • Moderator
17537 løsninger 158574 svar

Are you possibly using code in userChrome.css that is malfunctioning and could be causing this?

Are you possibly using code in userChrome.css that is malfunctioning and could be causing this? *https://www.userchrome.org/what-is-userchrome-css.html