The Insert CSS File action works correctly in the preview window and in the
Dingus, but is completely absent from exported HTML.
Inspecting the exported HTML <head> in DevTools confirms the Vostock theme
style is present, metadata actions like Set Metadata survive to export
correctly, but the CSS injected by Insert CSS File is nowhere in the output.
This makes Insert CSS File unreliable for any workflow that involves exporting,
since what you see in preview does not match what you get on export.
Steps to reproduce:
- Add an Insert CSS File action to a Preprocessor or Processor rule
- Confirm the CSS appears correctly in the Marked preview
- Export as HTML
- Inspect
<head>in the exported file
Expected: CSS from Insert CSS File appears in <head> of exported HTML
Actual: CSS is absent from export entirely
