Math equations and callout blocks not rendering in published articles

Description:

**Math equations** and **callout blocks** are not rendering correctly in published articles, 
they appear as raw code instead of rendered content.

In the **editor**, math and callouts display correctly.

Additionally, the **“Copy draft preview URL”** feature returns a **404 page** instead of showing the draft preview.

Notes:
The issues appeared after a recent hashnode update.