R 4.2.0: using first element strikes again

[dmenne]

Using your example:

https://rstudio.github.io/thematic/index.html

Related context:

rstudio/shiny#3626
rstudio/shiny#3625

> shiny::runApp()
Lade nötiges Paket: shiny

Listening on http://127.0.0.1:6175
 [100%] Downloaded 109448 bytes...
Fontconfig error: Cannot load default config file
Warning in check_font_path(italic, "italic") :
  'italic' should be a length-one vector, using the first element
Warning in check_font_path(italic, "italic") :
  'italic' should be a length-one vector, using the first element

[cpsievert]

Duplicate of #120