Hi, this question has been posted before without any answers...but i have the same issues after updating RStudio (1.2.5042)
How to set / alter the default settings of the plot zoom viewer?
When using fullscreen mode in previous version of RStudio, it used to just zoom to a helpful stand-alone window floating which you could resize to estimate target plot dimensions, but now defaults (version 1.2.5042) to full screen which is annoying to resize each time
thank you,
bonif