Scripts and .NET Standard 2.0 - Editor shows reference error in F# code while code is correct and runs

[vsfeedback]

When adding references for a script file, I encounter an error that pops up in the editor, but it is possible to run the code in FSI?

See attachment.

This issue has been moved from https://developercommunity.visualstudio.com/content/problem/241500/editor-shows-reference-error-in-f-code-while-code.html
VSTS ticketId: 607352
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[cartermp]

This is an issue (based on info in the VSTS report) where references to .NET Standard components in an F# script file will produce an error in a script file, but execute in F# interactive.

[cartermp]

Related to #3309 but not the same issue

[cartermp]

Closing this out in favor of #2407, which is the main issue tracking .NET Core (and Standard) support for FSI and scripting.