While in Month view when you click on the date to add an event, the balloon pops out and lets you name the event. Press the Create event button and the page acknowledges that you've created the event. However, it is not displayed on that date's box. Even if you switch to Day or Week or Agenda view, the event you supposedly created is not shown. Does not matter if there are already other events scheduled that day or if it's blank. This is with r27630. When using the standard Safari 3.0.4 v5523.10 bundled with Leopard, the events display and behave properly.
Adding an event this way works for me with a local debug build of WebKit r27683 with Safari 3 Public Beta on Tiger.
Appears fixed in r27716. Thanks!
In my opinion the bug should be marked as RESOLVED WORKSFORME