Is there a global TreatWarningsAsErrors that is on by default?

[jtorvald]

I'm trying to build a Xamarin iOS project on a new computer with a fresh install of Visual Studio for Mac and MSBuild is treating warnings as errors, even though the setting to treat them as errors is turned off.
Also I tried properties like: TreatWarningsAsErrors and WarningsNotAsErrors but they don't have any effect.
When I move WarningLevel from 4 to 0 I'm able to build again.

The same code works on my older MacBook with the same msbuild version without problems. It shows warnings as warnings and not as errors.

Is there some global setting somewhere outside of the project? Either in the solution or global settings that turns warnings into errors?

Microsoft (R) Build Engine version 16.10.1 for Mono
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