Shinyapp displays only on left-half of the screen


Welcome to the RStudio community!

First of all, is this only happening with this particular app and in the Edge browser, or with all apps and in all browsers?

Issues with Shiny code can stem from both the reactive Shiny code itself or the regular R code used in the functions. In order for us to help you with your question, please provide us a minimal reproducible example (Reprex) where you provide a minimal (dummy) dataset and code that can recreate the issue. One we have that, we can go from there. For help on creating a Reprex, see this guide:

Good luck!