If from the RStudio menu, I select File > New File > R Markdown ... and then select Presentation, HTML (Slidy).
Leaving the sample code and pressing Knit HTML, opens the presentation in presentation mode in an RStudio browser (after saving). However, if I then select Open in Browser the presentation shows as one page and pressing "a" to change to slide show mode does not work (tested with Chrome and IE)
This same behaviour does not occur if I choose HTML (ioslides), i.e. ioslides works as expected.
Is anyone else able to replicate this problem? Any ideas? Apparently javascript is enabled...