RStudio Connect Shiny Loading Screen

Hi all,

Shinyapps.io gives a pulsating 'Please wait' screen while presumably the R instead is initialising and running the global.R script. To contrast, my R Shiny apps in RStudio Connect have a blank white screen while loading as the app's HTML has not been sent to the client.

Has anyone managed to implement a similar feature in their RStudio Connect shiny apps? This is different from R functions like withProgress or auto-hiding elements with Javascript/shinyjs. The intention is to show a loading page while the app initialises and before the app's HTML is served to the client.

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