What is this data?
Change parameters

Bug # Dupe
Count 		Change in last
7 day(s) 		Component Type Severity OS Target Milestone Summary
78414 183 0 Plug-ins defect major All mozilla48 Application shortcut keys (keyboard commands such as f11, ctrl+t, ctrl+r) fail to operate when plug-in (flash, acrobat, quicktime) has focus
1392106 163 0 Graphics: Text defect S3 Windows 7 --- Intermittent letter missing in reftests on Windows 7
22274 159 0 Layout defect normal All --- [INLINE] Too much space (for descenders) under image (<img>) elements, e.g. in table cells
319196 145 0 Startup and Profile System defect critical Windows XP --- customized toolbar always reset to default on restart, bookmarks and search engines lost, unable to add search engines (localstore.rdf corruption on upgrade or crash). SEE URL FIELD FOR SUPPORT LINK
20618 136 0 Widget: Win32 defect major Windows --- Mousewheel doesn't work with some driver/Win32 OS combinations (scroll, scrolling)
25537 134 0 Layout enhancement normal All --- (Warning 56k) Alt text is not displayed as a tooltip over <img> (image)
162134 129 0 Plug-ins defect major macOS Future [OSX] Java applets draw on wrong tabs
117222 120 0 Security enhancement normal All --- Limit Scope of Session Cookies (new tabs and windows)
154892 116 0 Layout defect critical All mozilla1.9beta1 Splitting Absolutely positioned frames not implemented - Missing second page of content when printing or print previewing this site
94035 111 0 Plug-ins enhancement normal All Future Allow blocking of any media type (flash, plug-in, applet, etc.) by site (like cookies and images)
172962 109 0 General enhancement normal All Firefox1.0 Options for where to open URLs from other applications (reuse tab, new tab, new window)
1471001 102 0 Canvas: WebGL defect normal Unspecified --- Intermittent dom/canvas/test/webgl-conf/generated/ <test_name> | Test timed out.
193749 94 0 Preferences: Backend defect critical All --- bookmarks and personal preferences are lost after system crash due to power failure
1293474 89 0 Graphics defect normal Linux --- Crash in libxcb: "xcb_conn.c:186: write_vec: Assertion `!c->out.queue_len' failed"
187435 88 0 Layout: Form Controls defect normal macOS --- Elements (TEXTAREA, IFRAME, DIV, etc.) with visibility:hidden still show scrollbars
245418 86 0 XUL defect normal Windows XP --- menus and contextual menus open on wrong screen when using two/dual/multiple screens/monitors/displays
215055 86 0 Web Painting defect critical All --- (PLEASE READ COMMENT #133) Content of tall pages is clipped and can't be displayed if overflow!=visible [16 bit widget coordinates]
915 81 0 CSS Parsing and Computation defect normal All Future implement inheritance of alignment attributes from columns (align, valign, char, charoff, (lang, dir)?)
247833 80 0 MailNews: Message Display defect major All --- Long From/To push window content (incl. scrollbars) out of view
193638 80 0 Preferences: Backend defect normal All --- [Meta] corrupt or lost pref.js / startup configuration error (tracking bug)

Change Parameters

When sorting or restricting, work with:
Restrict to products:
days
Or just give this to me as a . (Note: the order may not be the same.)

What are "Most Frequently Reported Bugs"?

The Most Frequent Bugs page lists the known open bugs which are reported most frequently, counting the number of direct and indirect duplicates of bugs. This information is provided in order to assist in minimizing the amount of duplicate bugs entered into Bugzilla, which saves time for Quality Assurance engineers who have to triage the bugs.

How do I use this list?
  • Review the most frequent bugs list.
  • If your problem is listed:
    • Click on the bug number to confirm that you have found the same bug, and comment if you have additional information or move on with your testing of the product.
  • If your problem not listed:
    • Try and locate a similar bug that has already been filed.
    • If you find your bug in Bugzilla, feel free to comment with any new or additional data you may have.
    • If you cannot find your problem already documented in Bugzilla, file a new bug.