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Steps to reproduce :
1. Create a new Unified API iPad project
2. Open the project properties
3. Go to the "Build" tab
4. Uncheck "Define DEBUG constant"
5. Save project
6. Recheck "Define DEBUG constant"
7. Save project
8. Unload project
9. Reload project and go see the "Conditional compilation symbols", they are duplicated
They now duplicate everytime you reload the project or restart visual studio
Created attachment 12382 [details]
Zip Xamarin Logs
I have checked this issue with the help of test steps given in bug description and able to reproduce the reported behaviour.
Please refer the screencast : http://www.screencast.com/t/gBcrX6pG
Note : I am getting this issue for all iOS template projects (for both Unified and Classic API iPad/iPhone/Universal templates).
Environment Info :
Microsoft Visual Studio Professional 2013
Version 12.0.31101.00 Update 4
Microsoft .NET Framework
Installed Version: Professional
Xamarin 3.11.850.0 (5c48f6b)
Xamarin.Android 184.108.40.206 (f98871a95a479f6d71b3067b7e5834d41fcb2118)
Xamarin.iOS 220.127.116.11 (a888f9e906e136062b2de4a6b738787daae4e824)
I am still able to reproduce this using 18.104.22.1687 (ddd8750/d15-4).
env info: https://gist.github.com/BenBeckley/692bbb6e8fd2d33ba945b90d6ebc7fed
Fixed via PR to iOS (the bug is on their side): https://github.com/xamarin/xamarin-macios/pull/2430. Needs a CP and a bump on our side.