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
In RStudio, the default graphics device is normally "RStudioGD". You can change that to something else: the normal choices are "windows" on Windows, "quartz" on MacOS, "X11" on Linux. So for example, use
options(device = "quartz")
in your RStudio session on a Mac and you'll get the regular MacOS graphics window.