A snippet of some of the issues I've had so far on a single Facebook dev project. More when it's done.

facebook.dev

edge.create events do not fire for comments:
http://github.com/facebook/connect-js/issues/#issue/82

bug with share UI:
Error: Permission denied for <http://static.ak.facebook.com> (document.domain=<http://facebook.com>) to get property Window.Arbiter from <https://www.facebook.com> (document.domain=<https://facebook.com>).
Source File: http://static.ak.facebook.com/connect/canvas_proxy.php#method=resize.ack&params=%7B%7D&relation=parent.frames%5Bf4ffd260f7d5d2%5D
Line: 90

http://forum.developers.facebook.net/viewtopic.php?pid=280935

bug with fb:req-choice in email invites
http://bugs.developers.facebook.net/show_bug.cgi?id=13264

incorrect documentation on fb:request-form
http://bugs.developers.facebook.net/show_bug.cgi?id=13265

request-form is incorrect width
http://alexandershapovalov.com/facebook-multi-friend-selector-dialog-width-is-incorrect-73/

cols in friend request incorrect
http://bugs.developers.facebook.net/show_bug.cgi?id=6723

Bug reporter login page:

Error: document.forms.f is undefined
Source File: http://bugs.developers.facebook.net/
Line: 1

Error: document.forms.f is undefined
Source File: http://bugs.developers.facebook.net/index.cgi
Line: 1

Fatal errors with cURL timeout:
http://bugs.developers.facebook.net/show_bug.cgi?id=13507
Fatal error: Uncaught CurlException: 28: SSL connection timeout thrown in /Users/typeoneerror/Sites/DigitalAmbush/Site/trunk/library/Facebook/src/facebook.php on line 622

Other reports:
http://forum.developers.facebook.net/viewtopic.php?id=77587
http://forum.developers.facebook.net/viewtopic.php?id=67463

exclude_ids does not work in multi-friend-selector
http://bugs.developers.facebook.net/show_bug.cgi?id=13504