| 1771902 |
Compositor CSS animations are not paused in fully occluded windows |
NEW |
| 1777875 |
Lenovo Privacy Guard with "Enable this feature when typing passwords" causing excessive UI responsiveness delays (jank) |
NEW |
| 1931717 |
[meta] High OOM rate and CC time in YouTube |
NEW |
| 1939354 |
RAM too much |
UNCONFIRMED |
| 1940667 |
30s of jank on parent-process doing something around getFixupURIInfo and ContentAreaDropListener.sys.mjs (resource://gre/modules/URIFixup.sys.mjs:278:18) |
NEW |
| 1941608 |
Explore AvlTree improvements |
NEW |
| 1941716 |
On a fresh profile, Negative heap-unclassified on "My Bugs" query on b.m.o |
NEW |
| 1942031 |
Bad canvas performance on this example (nokiadesignarchive.aalto.fi) |
NEW |
| 1943419 |
Fluidd memory leak |
UNCONFIRMED |
| 1943503 |
High CPU usage on Debian x64 bookworm (VMware player guest) |
UNCONFIRMED |
| 1943841 |
(With Ublock or "Snap links plus addon") Testcase generating 1000 iframes is 3.3x slower in Nightly and gets superlinearly slower with increase in number of iframes, uses more RAM, and memory doesnt get released fully if you reload the page |
NEW |
| 1945665 |
airbnb.com - Attempting to enter a destination in the search by using the gboard causes the gboard to become unresponsive |
NEW |
| 1946248 |
Too much time spent in gfxMacPlatformFontList::DeprecatedFamilyIsAvailable during startup |
NEW |
| 1946913 |
Consume too much memory |
UNCONFIRMED |
| 1949252 |
Meta Messenger causing high CPU load |
UNCONFIRMED |
| 1950073 |
www.kiwico.com - Checkout page becomes unresponsive |
NEW |
| 1950901 |
Testcase generating N=5K forms (using credential mgmt API?) takes 30s in parent-process and 50s in content process. Chrome takes 9s. |
NEW |
| 1955077 |
Firefox freezes and cause Windows hang when access certain websites |
UNCONFIRMED |
| 1955509 |
Constant CPU usage while idle on the Tiki.org website front page |
UNCONFIRMED |
| 1956850 |
Ublock Origin increases the time to load a simple demo by 4x and uses ~3x more RAM (time spent in wrappercache, proxy, xraywrapper, minorGC and related stuff) |
NEW |
| 1957692 |
Testcase generating N=500 forms and submitting them takes 27s in both parent and content processes,and is 675x slower than Chrome (Part2 of bug 1950901) |
NEW |
| 1958480 |
x.com - High battery drain |
NEW |
| 1958712 |
Testcase generating N <META> elements is 20x slower than Chrome and does weird stuff in Compositor and SceneBuilder (PAPZCTreeManager::Msg_UpdateZoomConstraints) |
NEW |
| 1959837 |
openstreetmap iD editor - slow zooming |
NEW |
| 1964374 |
x.com - Scroll lagging after performing a subsequent query |
NEW |
| 1965718 |
Google Maps framedrops when I'm panning the map |
UNCONFIRMED |
| 1966492 |
JS isn't minified in Fenix release builds |
NEW |
| 1967143 |
firefox taking too much memory |
UNCONFIRMED |
| 1967585 |
Excessive memory allocation when toolbar icons are updated (e.g., during downloads or extension changes) — sometimes triggers OOM killer |
UNCONFIRMED |
| 1972941 |
[Linux] File downloading is CPU-intensive |
NEW |
| 1975272 |
Animated newtab background images consume CPU even when not in the foreground |
NEW |
| 1975348 |
EspnCricInfo site creates massive CPU and Memory usage FF140.0.2 |
UNCONFIRMED |
| 1982980 |
Memory leak in Firefox on Android when repeatedly appending and removing an iframe |
UNCONFIRMED |
| 1988312 |
www.pexels.com - Stuttering/choppy scroll |
NEW |
| 1988605 |
Facebook search bar animation stutters on Firefox |
UNCONFIRMED |
| 1988608 |
Tabs in Firefox refresh when multitasking |
UNCONFIRMED |
| 1988776 |
MutationObserver's getReceiverFor is slow when there are a lot of observers |
NEW |
| 1993778 |
Firefox causes MacBook battery to drain fast |
UNCONFIRMED |
| 1994817 |
Firefox CPU usage spikes to 100%+ on some sites, particularly when opening new tabs |
UNCONFIRMED |
| 1999165 |
Hanging Constantly 144x |
UNCONFIRMED |
| 1999598 |
Firefox for macOS is using a lot of battery |
UNCONFIRMED |
| 2001588 |
Zooming in and out on https://www.tcm.com/schedule is slow |
UNCONFIRMED |
| 2001751 |
145.0.1 hogs cpu |
UNCONFIRMED |
| 2001871 |
private window seems to slow and crash all of firefox |
UNCONFIRMED |
| 2002153 |
Laggy Youtube in-Video UI |
UNCONFIRMED |
| 2002920 |
Drag-and-drop 5MB of text on an blank tab leads to recurring 4.5s jank on the parent-process, spending time in nsIURIFixup.getFixupURIInfo |
ASSIGNED |
| 2003401 |
Firefox 145.0.2 reproducibly locks-up UI |
UNCONFIRMED |
| 2003583 |
chase.com - 145.0.2 is incompatible with Chase Online Banking features |
UNCONFIRMED |
| 2003795 |
store.steampowered.com - GPU usage significantly increases causing performance issue |
NEW |
| 2005342 |
Regular massive memory leak |
UNCONFIRMED |
| 2005548 |
High ram usage in Youtube site when uBlock Origin is enabled. |
UNCONFIRMED |
| 2005613 |
Opening the Suggest database on Android does a lot of IO (32MB read + 16MB write) |
NEW |
| 2005635 |
decathlon.fr website consuming CPU while not displayed |
UNCONFIRMED |
| 2006540 |
Extensions Using 150% CPU During Normal Browsing |
UNCONFIRMED |
| 2006766 |
Firefox started using 2.5 to 3 GB of RAM. I have the same number of tabs open as usual--maybe only a few more. |
UNCONFIRMED |
| 2007114 |
www.bilibili.com - Excessive GPU resources are being used during video play with "danmaku" feature enabled |
NEW |
| 2007324 |
hianime.pe - Memory fluctuations when watching videos |
NEW |
| 2007363 |
Firefox 146 on Mac OS Tahoe 26.2, massive memory leak |
UNCONFIRMED |
| 2007610 |
"This page is slowing down Firefox. To speed up your browser, stop this page." error |
UNCONFIRMED |
| 2007827 |
Slow upload speed in Firefox 146.0.1 compared to Microsoft Edge |
UNCONFIRMED |