Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Appears black squares on pages on mouse hover

  • 10 பதிலளிப்புகள்
  • 1 இந்த பிரச்சனை உள்ளது
  • 3 views
  • Last reply by RisingDragoon

When i move mouse on link appears black square, it's really annoing... I've already update Firefox to 59.0.2 (64 bit)

When i move mouse on link appears black square, it's really annoing... I've already update Firefox to 59.0.2 (64 bit)

தீர்வு தேர்ந்தெடுக்கப்பட்டது

It could be the work of one of your add-ons, or it could be Hardware Acceleration. How to disable Hardware Acceleration {web link}

Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; <Control> (Mac=<Command>) <Shift> A)

In the Add-ons Manager, on the left, select Extensions. Disable a few add-ons, then Restart Firefox.

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All Of them.

If the problem continues, disable some more (restarting FF). Continue until the problem is gone. After, you know what group is causing the issue. Re-enable the last group ONE AT A TIME (restarting FF) until the problem returns.

Once you think you found the problem, disable that and re-enable all the others, then restart again. Let us know who the suspect is, detective.

Read this answer in context 👍 0

All Replies (10)

Check your zoom controls.

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

If this fixes the issue; It appears to be an issue that only affects users who have turned off ClearType font rendering within their windows settings. So a workaround for the moment would either be to turn ClearType back on or disabling hardware acceleration in Firefox: Firefox's performance settings How to Tweak ClearType in Windows for Better Screen {web link}

Bug 658763 Missing text when ClearType is forced via DirectWrite rendering-mode prefs but disabled in Windows

It'isnt a problem of zoom, i tried but the problem still there, It happens on every pages of firefox (home, and on tabs)

RisingDragoon said

It'isnt a problem of zoom, i tried but the problem still there, It happens on every pages of firefox (home, and on tabs)

If not then the link? So others can see what it does.

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?

FredMcD said

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?

Thank you for support

Well, in Safe mode the problem disappearing, but this not resolving the problem in "normal" mode

What should I do now?

தீர்வு தேர்ந்தெடுக்கப்பட்டது

It could be the work of one of your add-ons, or it could be Hardware Acceleration. How to disable Hardware Acceleration {web link}

Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; <Control> (Mac=<Command>) <Shift> A)

In the Add-ons Manager, on the left, select Extensions. Disable a few add-ons, then Restart Firefox.

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All Of them.

If the problem continues, disable some more (restarting FF). Continue until the problem is gone. After, you know what group is causing the issue. Re-enable the last group ONE AT A TIME (restarting FF) until the problem returns.

Once you think you found the problem, disable that and re-enable all the others, then restart again. Let us know who the suspect is, detective.

This issue was fixed in 59.0.2 please update. https://support.mozilla.org/en/kb/update-firefox-latest-version Alternatively the issue is to turn Cleartype font From Search in Settings.

Please let us know if this solved your issue or if need further assistance.

Try to update to 59.0.2 .

  • Help -> About Firefox

Note that such issues are usually a problem with hardware acceleration.

It was the hardware acceleration, I said that I had already updated firefox to 59.0.2 :)