Firefox Tomorrow
Stable 147.0.3

Firefox 147.0.3

Wednesday, February 4, 2026 7 changes 3 categories
New (1) Fixed (5) Changed (1)

TL;DR

1 new feature, 5 fixes, 1 other change. Highlight: Interoperability improvements for the CSS anchor positioning and Navigation web APIs.

New 1 item
  1. 01

    Interoperability improvements for the CSS anchor positioning and Navigation web APIs.

Fixed 5 items
  1. 01

    Fixed a regression where position: sticky elements on some webpages could appear stuck or fail to update while mousewheel-scrolling after certain :hover interactions. ( Bug 2010481 )

  2. 02

    Fixed an issue where the Firefox Developer Tools could fail to re-open after using the Inspector’s node picker and reloading a page containing cross-origin iframes. ( Bug 2003810 )

  3. 03

    Fixed an issue where the DNS over HTTPS provider settings section could appear as a blank box, preventing users from seeing the current setting or changing it. ( Bug 2010501 )

  4. 04

    Fixed an issue on Windows systems with a large number of fonts installed where parts of the Firefox UI (tabs, menus, and Settings) could display garbled characters or symbols instead of readable text. ( Bug 2012950 )

  5. 05

    Reference link to 147.0.2 release notes .

Changed 1 item
  1. 01

    On Linux (Wayland) systems, certain popups and context menus will sometimes open in the wrong place, such as the top-left corner of the window. Firefox 147.0.3 has a partial mitigation for this problem and remaining instances will be addressed in a future release. ( Bug 2003045 )