emojifont impacts use of other fonts in titles and axes

[db369]

For some reason, ggplot reverts to 'sans' at a very tiny font size when using emojifont. Error message below. Restarting the R session and not loading emojifont solves the problem.

Warning in grid.Call(C_textBounds, as.graphicsAnnot(x$label), x$x, x$y, :
font family 'Quadon' not found, will use 'sans' instead