Plugin node has red aura in 3D editor view but no errors reported

Godot Version

4.4.stable.mono

Question

I converted a gdscript plugin to C#. There are no errors, it works, but in the 3D editor view, it has a red glow. How do I remove this red glow?

I suspect it’s a UID issue as it was glowing red when I goofed on importing the default_material.tres and it added the red glow and gave an error warning about the UI, so I re-created it and the text error went away, but the glow has not. Even after rebuilding the scene from scratch.

The whole project is at GitHub - Dustin00/godot-levelblock-csharp: This is godot-levelblock in C#, it’s supposed to just be a conversion from the godot-levelblock asset/plugin. The scenes/csharp_test.tscn shows the problem.