In 17w15a, the bed can now be crafted in two ways; using a particular colour of wool, and being dyed from a white bed. Now, items with multiple recipes normally have their recipes grouped in the recipe book (as shown in the first and second images). However since there are now 31 ways to craft a bed, it appears as two recipes in the recipe book (as shown in the third image). These recipes correspond to minecraft:<colour>_bed and minecraft:<colour>_bed_from_white_bed, respectively. This may be intended, however I doubt this as it only adds extra confusion.

In addition, when initially clicking on the "second" bed recipe, the first recipe shows up in the grid, unless click and hold is activated (as shown in the fourth and fifth images, respectively).

Note that these images were taken after using /recipe give @p * to obtain all recipes.