I have three bug reports:
1) The CKEditor shows some erroneous extra space between paragraphs when forum posts are edited. When editing blog posts, everything looks the way it should.
2) The Source button appears when old blog and forum posts are edited, but not when new ones are written. Furthermore, this happens even when the HTML input is turned off in the admin area. If I understand it correctly, the CKEditor prevent users from adding malicious code, so this is not a security threat, but a consistent behavior would still be nice.
3) The native editor still shows up in the newsfeed, on the profile wall, and in the mailbox.
I also have one suggestion:
One problem with the native editor is that pasting formatted text into the editor gives unpredictable results. The CKEditor has filters that can be used to address this kind of issues. For example, there is the option forcePasteAsPlainText for removing formatting. There are other options for texts written in Word. I suggest that these kind of filters are activated.