Partial Property on class with Primary Constructor shows IDE error CS0229 but compiles fine.

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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[severity:It bothers me. A fix would be nice]
I was working on a source generator and ran into a problem. I ended up minimally reproducing with no source generator at all determining it to be an IDE issue. Intellisense/IDE generates a "CS0229 Ambiguity between 'TestClass.Test2' and 'TestClass.Test2'" error when accessing a partial property on a class with a primary constructor, but compilation works with no errors and the code should not be ambiguous.
Problem occurs with the following requirements:

• Must access the property in a different file than the class is declared. - If the definitions are in the same file as the property access, the issue does not occur
• The class for the property must have a primary constructor - If using a regular constructor the issue does not occur

I've attached a minimal reproduction project, as well as showing it inline here since it is really small:

using Test;

public class Program
{
    public Program(TestClass test, TestClass2 test2)
    {
        Console.WriteLine(test. Test);
//#error version Compiler version: '4.12.0-3.24572.7 (dfa7fc6b)'. Language version: preview.
        Console.WriteLine(test. Test2); // CS0229 Ambiguity between 'TestClass.Test2' and 'TestClass.Test2'

Console.WriteLine(test2. Test);
        Console.WriteLine(test2. Test2); // No Error
    }

public static void Main() { }
}

namespace Test
{
    public partial class TestClass(string Test)
    {
        public string Test { get; } = Test;
        public partial string Test2 { get; set; } = "";
    }
    public partial class TestClass
    {
        public partial string Test2 { get => field; set => field = value; }
    }
    public partial class TestClass2
    {
        public string Test { get; }
        public partial string Test2 { get; set; } = "";

public TestClass2(string Test) => this. Test = Test;
    }
    public partial class TestClass2
    {
        public partial string Test2 { get => field; set => field = value; }
    }
}

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Original Comments

Feedback Bot on 31/12/2024, 08:23 AM:

We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.

[deepakrathore33]

This is similar to #76651

[DanFTRX]

Is this fixed by a87e115 ?