I suddenly started having an issue where plots printed to the plots window show missing glyph symbols in the labels.
Plot in plots window:
Plot saved as PDF is normal
require(corrplot) M<-cor(mtcars) corrplot(M, method="circle") pdf("test.pdf") corrplot(M, method="circle") dev.off()
I am using Rstudio 99.9.9 and R 3.6.2 on Clear Linux.