Add FB8761306 - Binary SwiftPM frameworks are copied (duplicated) int…

…o share extensions PlugIns directory causing the archive validation to fail

FB8761306 - Binary SwiftPM frameworks are copied (duplicated) into share extensions PlugIns directory causing the archive validation to fail/README.md

@@ -0,0 +1,43 @@
+# Basic Information
+
+## Please provide a descriptive title for your feedback:
+
+Binary SwiftPM frameworks are copied (duplicated) into share extensions PlugIns directory causing the archive validation to fail
+
+## Which area are you seeing an issue with?
+
+Xcode
+
+## What type of feedback are you reporting?
+
+Incorrect/Unexpected Behavior
+
+# Details:
+
+## What version of Xcode are you using?
+
+Version 12.0 (12A7209) and Version 12.2 beta 2 (12B5025f)
+
+# Description
+
+## Please describe the issue:
+
+Binary SwiftPM frameworks are copied (duplicated) into share extensions PlugIns directory causing the archive validation to fail. This is likely because `PSPDFKit.framework` and `PSPDFKitUI.framework` are copied into the `PlugIns` directory, in addition to them being already into the `Frameworks` directory in the app’s bundle. See the `Finder-Frameworks` and `Finder-PlugIns` screenshot. Please also refer to the `Organizer-Duplicated-Frameworks` and `Validation-Failed`.
+
+Note that this problem only occurs for projects that have an app (share) extension and that use Swift Package Manager with binary frameworks.
+
+The issue does not occur for projects without a share extension (see the attached `Minimal.zip` sample project) or in projects with an app extension that does not use SwiftPM (see the attached `Minimal-ShareExtension-Manual-Integration.zip` sample project) 
+
+## Please list the steps you took to reproduce the issue:
+
+- Unzip `Minimal-ShareExtension.zip` and open `Minimal.xcodeproj`
+- Archive the `Minimal` for `Generic iOS Device (arm64)`
+- Validate the archive
+
+## What did you expect to happen?
+
+The validation should be successful.
+
+## What actually happened?
+
+The validation fails.