I have also noticed that is you rename a file after the missing file notification and restart VS you end up with two files the old file and one with the rename.
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This issue is read only, because it has been in Closed–Fixed state for over 90 days. It was closed for 616 days.
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This issue has been fixed and is now available in our latest update. You can download the update via the in-product notification or from here: https://www.visualstudio.com/vs/ Thanks to everyone who provided feedback, votes and solutions for this problem.
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This issue has been fixed and is now available in our latest update. You can download the update via the in-product notification or from here: https://www.visualstudio.com/vs/ Thanks to everyone who provided feedback, votes and solutions for this problem.
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Changed files display yield/warning signs in Solution Explorer when using Windows Insider builds.
Issue:
In the some Windows Insiders builds, saving files in .NET Core, UWP, and Shared projects may result in yield/warning signs next to the changed files.
Workaround:
The yield/warning signs are benign and may be safely ignored. Reloading the solution will remove the yield/warning signs.
Source: https://www.visualstudio.com/en-us/news/releasenotes/vs2017-knownissues
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I have installed the fix by upgrading to the latest version of Visual Studio. The issue is still not fixed: