I am experiencing problems with 3.3RC2 that appears to be related to JQuery rather than individual plugins.
I have seen a similar problem with two plugins in RC2 that don't appear in 3.2.1 and may have appeared after RC1.
The two plugins that are showing the same fault are Bug Library and Minutes, Agendas and Newsletters. Both have a submit button that no longer displays a form dialog.
I have informed the developers.
The problem can be observed on my test website - under WordPress 3.2.1 (and possibly 3.3. RC1) the button 'Report New Issue' invokes the display of a form dialog.