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Hello, everybody,I've been using XCode (Version 10.0 (10A255) to learn to program in Swift version 4.2 (swiftlang-1000.11.37.1 clang-1000.11.45.1). I've been creating macOS playgrounds to experiment with code, using a lot of commenting to keep track of what I'm doing.The problem is with curly brackets in commented code. If I paste code in that contains curly brackets and then comment out the lines ('//') Xcode crashes. If I enter code with a curly bracket after // (or /* */), XCode crashes.I did a search here and elsewhere in regards to this problem, but the search returned nothing relevant. If anyone is interested, I can attach various crash reports.Thanks in advance,Grey