This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Why does a page on my website turn blue if I scroll beyond halfway?

  • 6 balasan
  • 4 ada masalah ini
  • 3 paparan
  • Balasan terakhir oleh tinyf

more options

One page only on my website, one that contains a lot of information, when viewed in Firefox but not in any other browser, looks normal until I scroll past approximately halfway down the page, at which point all the text on the page becomes covered in what appears to be a blue background. The page content is still there but obviously can't be read because the text colours are not compatible with the background.

One page only on my website, one that contains a lot of information, when viewed in Firefox but not in any other browser, looks normal until I scroll past approximately halfway down the page, at which point all the text on the page becomes covered in what appears to be a blue background. The page content is still there but obviously can't be read because the text colours are not compatible with the background.

All Replies (6)

more options

The URL of your website is?

Which version of Firefox?

more options

You may be experiencing this Windows bug:

  • bug 671302 – cairo-gdi: large background-images and gradients don't work beyond ~ 32768px

(please do not comment in bug reports: https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)
You can vote for this bug to show your interest in getting this fixed.

Diubah oleh cor-el

more options

Firefox version is 21.00 but website users are experiencing this also and I wouldn't know which version they're using.

Website is www.sloanegrammar.co.uk and the page is Sloane History.

more options

Yes, that looks like the bug I mentioned above.
I works fine for me on Linux, but with a Windows version it shows the appearance that you described at about y=32000 according to the DOM Inspector with the background color showing instead of the background image.

more options

You may be experiencing this Windows bug:

bug 671302 – cairo-gdi: large background-images and gradients don't work beyond ~ 32768px

(please do not comment in bug reports: https://bugzilla.mozilla.org/page.cgi? id=etiquette.html) You can vote for this bug to show your interest in getting this fixed.

more options

Thanks, cor-el. A member who uses Ubuntu also said he views the page perfectly in Firefox.