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Recently, the "show more" video description button on YouTube has stopped working.

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  • 1 有這個問題
  • 7 次檢視
  • 最近回覆由 cor-el

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I have Firefox 95.0.2 64 bit on Windows 7 Ultimate. My computer works perfectly. Recently on YouTube, the "show more" button, which expands the video description, has stopped working. When I click it, it used to show the full expanded video description. But now all it does is toggle between show more and show less! Nothing else happens anymore! No idea why. I have several different profiles on YouTube. If I switch to a different profile, the "show more" button works. But then, when I switch back to my main profile, it does not work again. This just began happening in the last couple days. The show more button still works in my chrome browser, but I ALWAYS use Firefox. I love it!

I cleared my history and cache, but it didn't fix it.

I have made no changes to my computer or installed any software or add-ons or anything else that might cause this (to my knowledge).

Can you PLEASE help me? Thank you very much!

I have Firefox 95.0.2 64 bit on Windows 7 Ultimate. My computer works perfectly. Recently on YouTube, the "show more" button, which expands the video description, has stopped working. When I click it, it used to show the full expanded video description. But now all it does is toggle between show more and show less! Nothing else happens anymore! No idea why. I have several different profiles on YouTube. If I switch to a different profile, the "show more" button works. But then, when I switch back to my main profile, it does not work again. This just began happening in the last couple days. The show more button still works in my chrome browser, but I ALWAYS use Firefox. I love it! I cleared my history and cache, but it didn't fix it. I have made no changes to my computer or installed any software or add-ons or anything else that might cause this (to my knowledge). Can you PLEASE help me? Thank you very much!

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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 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 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 Troubleshoot Mode start window