Intermittent error with `theme(legend.text = element_markdown()` when combined with colour scale

[ntthung]

DF <- data.frame(x = rnorm(100), 
                 y = rnorm(100),
                 z = rnorm(100),
                 type = c(rep('C', 50), rep('delta', 50)))

ggplot(DF) +
  geom_point(aes(x, y, colour = z, shape = type)) +
  scale_shape_discrete(labels = function(x) ifelse(x == 'C', 
                                                   '<sup>14</sup>C',
                                                   '&delta;<sup>18</sup>O')) +
  scale_colour_distiller(palette = 'RdBu', direction = 1) +
  facet_wrap(vars(type)) +
  theme(legend.text = ggtext::element_markdown())

Error in grid.Call.graphics(C_setviewport, vp, TRUE) : non-finite location and/or size for viewport

and the figure comes without legend text:

The strange thing is that if I keep rerunning the code time after time, sometimes the plot can be rendered without error.

Versions:

• R: 4.0.0
• ggtext: 0.1.0
• gridText: 0.1.1

[Jesse-Kerr]

Also having the same issue

[SAuderset]

I have the same issue. It worked fine for a week and suddenly I get this error. Updated all my packages and installed the development version of ggtext, but nothing helps... The weirdest thing is that it only with some plots and not others, even though I use the exact same set up.

• R version 4.2.0
• ggtext 0.1.1
• gridtext 0.1.4.9000