I am running Mosaico beta 1.0 beta1 with 4.6.22 and 'View in your browser' does nothing. Of course, this is a beta so not surprising. But... is there a way round this? Otherwise quite impressed with Mosaico after a shaky start, but it would be good to have a greater variety of block shapes to add. Anyway, for now the above is the problem that I would love to find a workaround for.