They don't do anything by default. The developer makes it do what the developer wants (not the user). You claimed the developer has to "actively block it" which isn't the case.
Even in SwiftUI which has the simplest way to support multiple windows with zero work, the developer has to use WindowGroup, and if they didn't then you don't get to open more than one window.
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They don't do anything by default. The developer makes it do what the developer wants (not the user). You claimed the developer has to "actively block it" which isn't the case.
Even in SwiftUI which has the simplest way to support multiple windows with zero work, the developer has to use WindowGroup, and if they didn't then you don't get to open more than one window.