Wrong folding and indentation in code snippet that doesn't to a Class {}

[sct999]

I have created a CodeMirror editor using the csharp() extension.

The code editor is created as follows

const state = EditorState.create({
      doc: '',
      extensions: [basicSetup, csharp()],
});

const editorElement = document.getElementById('code-editor');
this.editorView = new EditorView({ state, parent: editorElement });

The code I'm trying to edit in codemirror is this

NewValue = AtmPressure * 0.21 + 5.5;
Temperature = (-0.2 * AtmPressure * AtmPressure + 2.4 * AtmPressure - 23.6873);
Pressure = (0.2 * AtmPressure * AtmPressure - 2.3061 * AtmPressure + 2.3);
  Flow = (0.2 * AtmPressure * AtmPressure - 3.5 * AtmPressure + 5.3);
  Revenue = (-0.0043 * AtmPressure * AtmPressure + 1.5 * AtmPressure + 2.3);

And it looks like this

It detects line 3 onwards as foldable, however, that's not correct.

Can this extension support code snippets that don't explicitly belong to a parent class?
Thank you