You are now on version 11.8.2. In that version most of the SWF-related features were taken out (like publishing to SWF). Slide transitions were SWF-based, and although you still did see them in previous versions they would never be functional for HTML output. However the team has overlooked that some of those transitions are functional when you publish to MP4, which is still possible. Personally I don’t know why developers use an interactive eLearning tool to create passive video but that is my opinion.