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firefox showing strange picture in picture in every website

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  • Last reply by cor-el

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firefox shows a strange picture in picture in almost all websites, whenever i select any text or hover mouse at a particular location a small picture shows up, please help me how to resolve this issue. it seem like a bug. a screenshot is attached. i have tried reinstalling firefox, but problem still persists. tried other browser and its not there, only in firefox. i want to use firefox only. thanks

firefox shows a strange picture in picture in almost all websites, whenever i select any text or hover mouse at a particular location a small picture shows up, please help me how to resolve this issue. it seem like a bug. a screenshot is attached. i have tried reinstalling firefox, but problem still persists. tried other browser and its not there, only in firefox. i want to use firefox only. thanks
Attached screenshots

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If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.

Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content. You can click shield icon for more detail and possibly disable the protection. You can check the Web Console for messages about blocked content.


You can try these steps in case of issues with webpages:

You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • hold down the Shift key and left-click the Reload button
  • press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • press "Command + Shift + R" (Mac)

Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).

"Remove the Cookies" for websites that cause problems:

  • Options/Preferences -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Options/Preferences -> Privacy & Security
    Cookies and Site Data -> Clear Data -> Cached Web Content: Clear

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window