[NTG-context] \adaptpapersize doesn't change back

Hello, This message is just for bug report. from wiki, the below example should switch back page 4 in portrait mode, but it doesn't. (ConTeXt ver: 2014.11.17 14:32 MKIV beta) \definepapersize[main] [A4] \definepapersize[extra][A4,landscape] \setuppapersize[main] \starttext Page 1. Portrait \page Page 2. Portrait \page \adaptpapersize[extra] Page 3. Landscape \page Page 4. Portrait \page \stoptext