问题 The same question as this one. I have two android projects on two windows, when I close one project by clicking [x] icon on my mac, the project closed but the window exists with a blank screen. My Android Studio Version info: Android Studio 4.0 Build #AI-193.6911.18.40.6514223, built on May 20, 2020 Runtime version: 1.8.0_242-release-1644-b3-6222593 x86_64 VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o macOS 10.15.4 GC: ParNew, ConcurrentMarkSweep Memory: 1979M Cores: 12 Registry: ide.new