My enhancement request, ENH-000173387, was officially denied, so I am taking it to the people. It's a little thing that I find very annoying.
I have a page with a Splash screen and every time I open the Build Mode of Experience Builder, it takes a series of clicks to dismiss the Splash screen, so I can work on my actually application. The Splash screen is usually just a block of text that rarely, if ever gets updated. The default behavior of Experience Builder should be to not show the Splash screen in the Build Mode, or they should at least provide an option to disable it in the Build Mode.
Programmatically, it's a simple update only requiring an if statement checking against props.isBuilder in the function that launches the Window.