F# .net core project referencing F# .net standard project, the error list window shows some errors.

[YunWeiaa]

Repro steps

1. Create a new F# .net core console app project;
2. Add a new F# .net standard classlib project；
3. Set reference from F# console app to F# netstandard classlibrary;
4. Add line similar to: Say.hello "Lily"

Expected behavior

No errors in error list

Actual behavior

There is a red squiggly, and the Error List shows some errors as below, but build and run succeeded.

Known workarounds

Close solution and reopen, the red squiggly and errors disappear.

Related information

VS 15.8.0 Preview 5
Dotnet --info

[TIHan]

I can confirm this. It looks like we may not be kicking off any updates when a project gets referenced. I will look into it.

[TIHan]

I think I know what's happening now. We aren't updating command line args when the project gets referenced.

[TIHan]

Hmm, the command line args are updated correctly. Something else is going on.

[TIHan]

#5284 should fix it.

[YunWeiaa]

Regression on the .net core 2.2 rtm (2.2.100-rtm-009546) against d16.0/28222.01 (16.0 preview 1.0)
( Solution: Close VS and reopen the project, restore succeeded with no error in error list window.)
Not repro on the .net core 2.2 rtm (2.2.100-rtm-009546) against d15.9/28219.56 (15.9 preview 4.0).