As was noted in our 2019.1 blog post, the Display Resolution Dialog, also known as Screen Selector, has been removed from Unity. Based on user data and customer research, we found out that it is one of the first things the vast majority of our developers disable when building their standalone players, and it frequently goes unused. We deprecated the dialog in 2019.1, and have completely removed the feature in 2019.3. The new Input System will work as the replacement for the input mappings, and all of the remaining functionality of the dialog is available via the Player Settings menu, scripting API, or Command Line Arguments for each option. Starting with 2019.3, when the default resolution is changed in the Player Settings, it will take precedence over the stored player preferences on the next run. If you have any questions, feel free to comment.