RSRP-274401: False warning: Optional parameter default value differs from parameter baz in base method 'void Bar(IBaz)'

Look like RSRP-179524 but the source of the type parameter isn't the same and the value in this case is (literally) the same.

interface IBaz<T>
{
     
}

interface IFoo
{
    void Bar<T>(IBaz<T> baz = null);
}

abstract class FooBase : IFoo
{
    public abstract void Bar<T>(IBaz<T> baz = null);
}

class Foo : FooBase
{
    // null is marked with the warning :
    // Optional parameter default value differs from parameter baz in base method 'void Bar<T>(IBaz<T>)'
    public override void Bar<T>(IBaz<T> baz = null)
    {
        
    }
}

The quick fix from Alt+Enter suggest to Copy the default value (null) from base and doesn't do anything.