搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多

A weird glitch keeps appearing in the upper left corner, is this normal?

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

more options

I keep having a weird glitch appear in the upper left hand corner of my firefox window. It appears right over the exit,minimize, and expand buttons. I don't know if this means if got a virus or something, but its quite strange and only happens with firefox.

I keep having a weird glitch appear in the upper left hand corner of my firefox window. It appears right over the exit,minimize, and expand buttons. I don't know if this means if got a virus or something, but its quite strange and only happens with firefox.

所有回覆 (1)

more options

Start Firefox in Safe Mode to check if one of the extensions (Firefox menu button/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox menu button/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window

Try to set browser.tabs.drawInTitlebar to false on the about:config page to disable displaying the tabs in the title bar.

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.