Created attachment 374822 [details]
Test case -- try to select a word using double click in the input field
If you have a contenteditable on a page, then word selection is broken for any input fields on the same page. Double click will not work as it usually does.
Tested with 3.5 beta 3.
Also happens on Windows and Linux.
Doesn't happen in Safari on OS X.
Is it a duplicate: https://bugzilla.mozilla.org/show_bug.cgi?id=528686 ?
*** Bug 633293 has been marked as a duplicate of this bug. ***
To debug this, try setting a breakpoint in nsIFrame::PeekOffset (or nsTextFrameThebes::PeekOffset) and watch for the case where aPos->mAmount is eSelectWord, and then see what prevents the word selection to work.