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certain web sites flash the graphics then quickly show HTML code-how to fix

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certain web sites flash the graphics then quickly show HTML code and the back arrow does not get the graphics back. The only way I can get the graphics for these sites is to open up the internet explorer browser and it works fine. I suspect that there is some HTML code that only works on the one Browser but not the other. This is a pain in the butt and I would like to continue using Firefox and not have to use IE for these few sites.

certain web sites flash the graphics then quickly show HTML code and the back arrow does not get the graphics back. The only way I can get the graphics for these sites is to open up the internet explorer browser and it works fine. I suspect that there is some HTML code that only works on the one Browser but not the other. This is a pain in the butt and I would like to continue using Firefox and not have to use IE for these few sites.

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Can you post a link to a publicly accessible page (i.e. no authentication or signing on required)?

Firefox 42+ has a Tracking Protection feature that is enabled by default in Private Browsing mode. When you are in private browsing mode then Firefox can show a shield icon at the left end of the location/address bar that some content is affected.

You can disable this feature in "Options/Preferences > Privacy" or via the about:privatebrowsing page that get when you open a New Private Window.

  • Options/Preferences > Privacy: "Use Tracking Protection in Private Windows"

If you use extensions (3-bar Menu button/Tools > Add-ons > Extensions) that can block content (e.g. Adblock Plus, NoScript, Flash Block, Ghostery) then make sure that such extensions aren't blocking content.

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

  • Switch to the DEFAULT theme: 3-bar Menu button/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window