Firefox Development

Is Firefox affected by "Meltdown"/"Spectre" (speculative execution security issues) (3)
Can Firefox help revive RSS/Atom? (Feature Request) (6)
U2F standard to Firefox? (2)
Extending Firefox functionality (1)
Web performance idea - ship popular web fonts as a system add-on (1)
Some menu items are missing in the FireFox 57 (9)
Video DownloadHelper 7.1.1 (1)
Webworker behaves very slow in Firefox (7)
Question about bookmark behavior (6)
Impresion desde el Navegador (2)
Keep configurations and extensions (1)
Full theme (1)
Cannot move firefox icons (2)
Process Manager and addon manager (3)
56.0.2, forced update despite no update selected (2)
When does Firefox accept a certificate for a different domain? (2)
Samsung Internet and Firefox Account? (1)
Invisible icons (1)
Firefox Quantum and empty page (2)
This post is no longer available... Firefox developer 58.0b1 edition: MediumEditor panes are broken (2)
Change font in URL bar (1)
Firefox 57 beta performance (1)
URL redirect after @ (2)
Does Firefox support RFC 4279? (2)
*require* informed consent: "opt"-in ought be initially disabled (1)
Firefox misbehaviours in response to drag-and-drop (1)
Firefox opening too many windows at start or session restoration time, occasionally opening three copies of a tab in response to a single Control-Click (4)
_collectBaseTabData@resource:///modules/sessionstore/TabState.jsm:100:1 (inner) – Tab state – file access error (2)
Loss of a tab, and its history, whilst using a combination of extensions (3)
Controlled Folder Access in Windows 10 Pro Version 1709 prevents FF from saving files (1)