How to reproduce:

1. Create a new project on Windows 11
2. Create a “Build“ folder in the project directory
3. Open File → Build Profiles
4. Switch to the “macOS” build profile
5. Press “Build” in the Build Profiles window
6. Select the newly created “Build“ folder
7. Observe the project directory

Actual result: “Build.app“ directory is created with all the build content inside it (not in the selected “Build” directory)
Expected result: The project is built to the selected directory (No “Build.app“ is seen)

Reproducible in: 2023.1.0a15, 6000.0.71f1, 6000.3.12f1, 6000.4.1f1, 6000.5.0b1, 6000.6.0a1

Reproduced on: Windows 11 Pro (25H2)
Not reproduced on: macOS 15.7.3

Note: Not reproducible on macOS when building for Windows (or macOS)