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Codeblocks not rendering correctly, instead showing up as lists of [object Object], [object Object],...

  • 8 replies
  • 0 have this problem
  • 8 views
  • Last reply by cor-el

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How do I fix the code block rendering issue?

How do I fix the code block rendering issue?
Attached screenshots

All Replies (8)

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Can you provide an example of a site where that occurs and what should appear instead of what does appear?

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The same issue is reported in the thread linked below.

https://support.mozilla.org/en-US/questions/1404953

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Did you also ask this at github site forum about this as well?

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Works for see, so it is possible that you have a content blocking extension that blocks JavaScript.

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.

  • click the shield icon for more detail and possibly disable the protection

You can check the Web Console for relevant-looking 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You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.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 (Settings).

"Remove the Cookies" for websites that cause problems:

  • Settings -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Settings -> Privacy & Security
    Cookies and Site Data -> Clear Data -> [X] Cached Web Content -> Clear

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.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 Troubleshoot Mode start window
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If you are still having trouble with this, do you have the Merlin extension? Disabling it fixed this issue for me and another user who posted the same problem. A pity really :( Good luck!

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Yes, this user has the Merlin extension.