X
Tap here to go to the mobile version of the site.

Support Forum

Sometimes I see some blurry rectangles on a website

Posted

On a website (sometimes) white, half visible rectangles come up. I don't know how to reproduce it, and whenever I try to open the dev tools it disappears. If devtools is open, the problem not coming up... I attach an image, I tried in most browsers (IE, Edge, Opera, Chrome...) and works fine, only Firefox does this.

On a website (sometimes) white, half visible rectangles come up. I don't know how to reproduce it, and whenever I try to open the dev tools it disappears. If devtools is open, the problem not coming up... I attach an image, I tried in most browsers (IE, Edge, Opera, Chrome...) and works fine, only Firefox does this.

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

More Information

FredMcD
  • Top 10 Contributor
4255 solutions 59589 answers

What's your computer system and Firefox version?


Make sure you are not blocking content.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?


One issue that seems more common lately is Firefox's Tracking Protection feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: Tracking Protection {web link}

What's your computer system and Firefox version? Make sure you are not blocking content. [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode] {web link} by holding down the '''<Shift> ''(Mac=Options)''''' key, and then starting Firefox. A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Is the problem still there? --------------- One issue that seems more common lately is Firefox's Tracking Protection feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: [https://support.mozilla.org/en-US/kb/tracking-protection Tracking Protection] {web link}

Question owner

Hi,

Thanks for the fast reply.

It is a Win 10 and Firefox 62.0 (64 bit).

I tried with the safe mode, it did not come up (but its not coming up every time, pretty hard to reproduce).

Hi, Thanks for the fast reply. It is a Win 10 and Firefox 62.0 (64 bit). I tried with the safe mode, it did not come up (but its not coming up every time, pretty hard to reproduce).
jscher2000
  • Top 10 Contributor
8758 solutions 71662 answers

Sorry, could you re-attach the image? It didn't come through on the original post. There's a browse button below the reply text area to attach an image.

https://support.mozilla.org/questions/1232323#question-reply

Sorry, could you re-attach the image? It didn't come through on the original post. There's a browse button below the reply text area to attach an image. https://support.mozilla.org/questions/1232323#question-reply
cor-el
  • Top 10 Contributor
  • Moderator
17527 solutions 158478 answers

You can try to disable hardware acceleration in Firefox.

Close and restart Firefox after modifying the setting for changes to take effect.

You can check if there is an update for your graphics display driver and check for hardware acceleration related issues.

You can try to disable hardware acceleration in Firefox. *Options/Preferences -> General: Performance<br>remove checkmark: [ ] "Use recommended performance settings"<br>remove checkmark: [ ] "Use hardware acceleration when available" *https://support.mozilla.org/en-US/kb/performance-settings Close and restart Firefox after modifying the setting for changes to take effect. *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems You can check if there is an update for your graphics display driver and check for hardware acceleration related issues. *https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration