"Build + Intellisense" in error list behaving as "IntelliSense Only"

[nguerrera]

I am not seeing all analyzer warnings from the build in the error list unless I select "Build only"

Version Used: 1.3 (synced to master at cd21f84)

Steps to Reproduce:

1. Follow https://github.com/dotnet/roslyn-internal/tree/master/Closed/Test/Solutions/RegenerateNewtonsoftErrorLogBaseline.txt up to step 7 (build solution)
2. Switch between "Build Only", "Build + IntelliSense" and "IntelliSense Only"
3. Contrast warning counts

Expected Behavior:
When I have Build + IntelliSense selected:

• I get a superset of Build results in my error list.
• At least all of the warnings from the build in the output window are in my error list

Actual Behavior:
Build + IntelliSense is behaving as IntelliSense only. There are thousands of warnings in the build, but with 'Build + IntelliSense' I see only the warnings for opened files.

[nguerrera]

@mavasani not sure how to tag, route this.

[mavasani]

Tagging @heejaechang

[mavasani]

Nick, you can add label Area-Analyzers.

[davkean]

Looks like this: #11378

[nguerrera]

Yep. Closing as dup.