After upgrading to version x code 11, windows in devices began to cascade, tell me how to fix it.

I am a novice programmer I made a small program on x code 10 swift 4.2 macOS 10 after upgrading to x code 11 and macOS, windows in the emulator have become a cascade I do not understand how to fix it.

After upgrading to version x code 11, windows in devices began to cascade, tell me how to fix it.
 
 
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