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

Avatar for Username

Cari Bantuan

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.

Pelajari Lebih Lanjut
Utas ini telah diarsipkan. Silakan membuat pertanyaan baru jika Anda membutuhkan bantuan.
Diarsipkan

Fullscreen Error with Multiple Displays when Hardware Acceleration is disabled

Firefox Browser appearance
Denys replied
QuidProGamer
QuidProGamer

I have my desktop extended across two displays. If I disable Hardware Acceleration in Firefox, entering fullscreen causes the window to be slightly offset down and right, leaving a thin band on the top and left sides of the screen where the desktop background and taskbar are visible behind the Firefox window.

From testing I have determined that this issue does not occur if I only have one monitor enabled or the monitors are mirroring the same display. I have also determined that the issue only occurs when Hardware Acceleration is disabled.

I have my desktop extended across two displays. If I disable Hardware Acceleration in Firefox, entering fullscreen causes the window to be slightly offset down and right, leaving a thin band on the top and left sides of the screen where the desktop background and taskbar are visible behind the Firefox window. From testing I have determined that this issue does not occur if I only have one monitor enabled or the monitors are mirroring the same display. I have also determined that the issue only occurs when Hardware Acceleration is disabled.
Lampiran tangkapan layar

Semua Balasan (2)

Denys
Denys
  • Moderator
  • Top 10 Contributor

Hi,

Thank you for reaching out! Could you please file a bug report on Bugzilla, Mozilla's bug tracker, so that the developers can take a look? In addition to your description, it would be also helpful to include your OS and Firefox versions.

If you don't feel comfortable enough with filing a bug, just let me know, and I'll do it for you. Thank you once more for investigating and reporting the issue!

Denys
Denys
  • Moderator
  • Top 10 Contributor

Hi there,

A quick update on the issue. It's now tracked under bug 1993474, and the fix targets Firefox 147. This version will be released on January 13.