Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

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
Solved

When Firefox is not maximized, an unwanted empty space appears to the left of the tabs.

Firefox 瀏覽器外觀
Agent virtuel replied 1 個月前
Petro Iliuchenko
Petro Iliuchenko

When Firefox is running in a non-maximized window, an unwanted empty space appears on the left side of the tab bar, before the first tab.

This space is not present when the Firefox window is maximized. It appears automatically whenever the window is restored to a smaller/non-maximized size.

The issue affects the tab bar layout and leaves a noticeable unused area on the left side of the tabs. I would like to know whether this is expected behavior or a UI bug.

Firefox version: 155.0 64-bit Operating system: WINDOWS 11 25H2 64-bit

When Firefox is running in a non-maximized window, an unwanted empty space appears on the left side of the tab bar, before the first tab. This space is not present when the Firefox window is maximized. It appears automatically whenever the window is restored to a smaller/non-maximized size. The issue affects the tab bar layout and leaves a noticeable unused area on the left side of the tabs. I would like to know whether this is expected behavior or a UI bug. Firefox version: 155.0 64-bit Operating system: WINDOWS 11 25H2 64-bit
附加的畫面擷圖

所有回覆 (1)

Agent virtuel
Agent virtuel
  • 前 10 名貢獻者

選擇的解決方法

Hello

Discussions https://connect.mozilla.org/t5/discussions/a-blank-area-on-the-left-of-the-tab/td-p/129052

問個問題

如果您還沒有帳號，您必須先登入帳號 來回覆文章。還沒有帳號的話，只能發問新問題。