The title is displayed incorrectly in the search result (Vertex AI Search)

[Svidnytskyy]

For some pages when searching in Vertex AI, we get the title Untitled, while when searching directly in Google search everything works fine.What could be the reason for this and how to fix it?

Screenshot from Vertex AI Search App in Agent Builder:

Screenshot from Google search:

Example page:
https://universe.unibas.ch/projects-collaborations/8033