Fixed adjoined plots disappearing in some Layouts
Fixed adjoined plots disappearing in some Layouts

Fixes Issue #66

ioam/holoviews,mjabri/holoviews,basnijholt/holoviews,basnijholt/holoviews,mjabri/holoviews,ioam/holoviews,mjabri/holoviews,vascotenner/holoviews,basnijholt/holoviews,vascotenner/holoviews,vascotenner/holoviews,ioam/holoviews