Building running Mac with .NET 5 prompts to install Mono framework

[InfinityGhost]

Expected Behavior

• Application executes and behaves as normal

Actual Behavior

• Application fails to execute and prompts to install the Mono framework
  

Steps to Reproduce the Problem

1. Create a project with Eto.Platform.Mac64
2. Target .NET 5
3. Build and attempt to run
4. Will prompt to install Mono instead of executing as normal, like .NET Core 3.1

Code that Demonstrates the Problem

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFrameworks>net5</TargetFrameworks>
    <RuntimeIdentifiers>osx-x64</RuntimeIdentifiers>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Eto.Platform.Mac64" Version="2.5.6" />
  </ItemGroup>

</Project>

Specifications

• Version: 2.5.6
• Platform(s): Mac64
• Operating System(s): All supported versions of macOS

[cwensley]

Thanks for reporting the issue! This should be fixed in 2.5.7 with #1788