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Missing vertical scroll bar in some websites

  • 2 replies
  • 1 has this problem
  • 15 views
  • Last reply by cor-el

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Today I have needed to access a couple of things on WhatsApp.Com On Firefox they have no vertical scroll bar although one is needed. But on Chrome they do have a scroll bar. Any suggestions for getting the scroll bar back on Firefox. All other websites seem to be ok.

Today I have needed to access a couple of things on WhatsApp.Com On Firefox they have no vertical scroll bar although one is needed. But on Chrome they do have a scroll bar. Any suggestions for getting the scroll bar back on Firefox. All other websites seem to be ok.

All Replies (2)

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Check your zoom controls.

<Control> (Mac=<Command>) + (plus) enlarge - (minus) reduce 0 (zero) restore


If you have a three-button mouse, clicking the middle button turns the mouse into a scroll controller.

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Note that some websites might be disabling the regular scroll bars and use custom scroll bars creates via CSS or JavaScript that isn't compatible with Firefox or you might be blocking this script.

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


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You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.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

You can remove all data stored in Firefox for a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").

Using "Forget About This Site" will remove all data stored in Firefox for this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data for that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of involved files.

If you revisit a 'forgotten' website then data for that website will be saved once again.