When using R Studio, I usually just work with an .R file stacked on top of the Console. I keep the other panes (Environment, History, Files, etc) hidden.
But whenever I
Commenting the following lines in "RStudio\R\Tools.R" seems to work...
# set our graphics device as the default and cause it to be created/set
.rs.addFunction( "initGraphicsDevice", function()
{
# options(device="RStudioGD")
# grDevices::deviceIsInteractive("RStudioGD")
grDevices::deviceIsInteractive()
})