Ghost Chapter Preventing Course Date Changes and Folder Slowness

Cannot Update Course Dates Due to Ghost Chapter in "[Legacy] Liceo Scienze Umane - Tradizionale" + Folder is Unusably Slow

Summary:
When attempting to change the course dates in [Legacy] Liceo Scienze Umane - Tradizionale, the system blocks the update. Investigation suggests the presence of a "ghost chapter"—a non-visible or corrupted module—which is interfering with scheduling logic. Additionally, the entire folder is significantly slow, to the point of being nearly unusable.

Steps to Reproduce:

1. Go to [Legacy] Liceo Scienze Umane - Tradizionale in the admin or editing interface.

2. Attempt to change the course start/end dates.

3. Observe the system fail or reject the update without a clear error.

4. Browse or open the folder – note the sluggish response (lag when opening folders, switching modules, or editing content).

Expected Behavior:

• Course dates should update smoothly if all chapters are scheduled correctly.

• No hidden or non-editable content should interfere with publishing.

• Folder navigation and interaction should be responsive.

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