updateSelectInput label update does not work

Hi,

I run the example for updateSelectInput from https://shiny.rstudio.com/reference/shiny/1.2.0/updateSelectInput.html . However, the label for the selectInput does not change although it should. Maybe
because label and choices are updated?

Shiny: 1.2.0, R: 3.5.2, RStudio 1.1.463, OS: Ubuntu 18.04.2 LTS

Sigbert