We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信，及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解

话题已存档。 如果需要帮助请提出新问题。

A small black rectangle appears in place of my minimize/close buttons and prevents these functions.

  • 1 个回答
  • 4 人有此问题
  • 1 次查看
  • 最后回复者为 cor-el

JillDolid
JillDolid
more options

The small black rectangle is just large enough to cover the minimize/resize and close buttons in the upper right corner of the screen. It appears after I have been using the browser for a while. In other words, it is not there when I first launch Firefox. I am able to close the window by using the task manager but not by clicking where the black rectangle is. Sometimes when I click all through the black triangle, it resizes the window somewhat but not consistently.

The small black rectangle is just large enough to cover the minimize/resize and close buttons in the upper right corner of the screen. It appears after I have been using the browser for a while. In other words, it is not there when I first launch Firefox. I am able to close the window by using the task manager but not by clicking where the black rectangle is. Sometimes when I click all through the black triangle, it resizes the window somewhat but not consistently.

所有回复 (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

In Firefox 4 and later Safe mode disables extensions and disables hardware acceleration. Try to disable hardware acceleration.

  • Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

If disabling hardware acceleration works then check if there is an update available for your graphics display driver.