The problem was solved by absolutely completely reinstalling Xcode. And manually deleting each of these folders: /Applications/Xcode.app ~/Library/Caches/com.apple.dt.Xcode ~/Library/Developer ~/Library/MobileDevice ~/Library/Preferences/com.apple.dt.Xcode.plist /Library/Preferences/com.apple.dt.Xcode.plist /System/Library/Receipts/com.apple.pkg.XcodeExtensionSupport.bom /System/Library/Receipts/com.apple.pkg.XcodeExtensionSupport.plist /System/Library/Receipts/com.apple.pkg.XcodeSystemResources.bom /System/Library/Receipts/com.apple.pkg.XcodeSystemResources.plist /private/var/db/receipts/com.apple.pkg.Xcode.bom

.tabViewStyle(.page(indexDisplayMode: .always)) I forgot to add a style in the code. If you use it, then the problems that I described above begin