When a <form> element is inside an <iframe> with designMode on, if you hit Enter inside of the <form> element, another copy of the form will be created on the next line. This is inconsistent with the behavior of other browsers (IE, Firefox, Opera), where the <form> element will grow larger, instead.
Created attachment 17635 [details] testcase
It seems like this bug no longer reproduces. Let's add a test for it.
Created attachment 139739 [details] Adds a test
Comment on attachment 139739 [details] Adds a test OK.
Comment on attachment 139739 [details] Adds a test Clearing flags on attachment: 139739 Committed r115794: <http://trac.webkit.org/changeset/115794>