Hi @Nathan Sokalski ,
Thank you for taking time to post this issue in Microsoft Q&A forum.
I followed your steps and tested(C# console project and C# windows forms project) on my side by using Visual Studio 2019 version 16.8.2, but it worked well and I can see the output in Immediate Window.
Please try these steps to troubleshoot:
1). If you don’t use the latest version of VS 2019, please consider to update it to the latest version, from VS Installer.
2). You can refer to this document: Reset settings and try to reset settings of VS 2019(remember to select “General” at step 4, if you have some customized environment settings, please also remember to export the environment settings before resetting).
3). Please try to create a new project and check if this issue persists.(I think you may have tried this)
4). Please try to disable any third-party extensions from Visual Studio > Extensions > Manage Extensions > Installed > select and click Disable, then re-launch VS and test again.
Not sure if this issue appears on specified project or code snippets, I will try to test the other projects for example: Xamarin project which you mentioned above.
Best Regards,
Tianyu
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