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For reason unknown to me, Xcode 9 started to duplicate some (most) of the issues (errors and warnings both). It adds 'Uncategorized' group in the Issue navigator and also displays each of them twice in the code.

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Not like it's critical, but uncomfortable.

The question is, have I unknowingly turned this on somewhere or is this a default behaviour for Xcode 9?

I'm using Xcode 9.1 + Swift 4 currently, but it happened also with Xcode 9 + Swift 3.

Thanks.

Tamás Sengel
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nikans
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1 Answers1

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This is a bug with the current release of Xcode. A temporary fix for this issue is deleting the Derived Data folder.

Tamás Sengel
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