appwrite Missing required parameter: "relatedCollectionId"

Following this tutorial: https://www.youtube.com/watch?v=_W3R2VwRyF4 Steps to reproduce:

Create database
Create three collections: "Users", "Posts", "Saves"
On Posts, Add Attribute Relationship
Select Two Way Relationship // Issues:
List of related collections does not load.
Tried typing "Users" to prompt, on pressing enter produced above error.
After a while, noticed I could scroll on the modal, there were some displaced elements on the screen, clicked them, it was the collections, on select everything run smoothly...

TL;DR

The user is experiencing an issue with the appwrite platform where the list of related collections is not loading. They tried typing "Users" to prompt but it produced an error message. After a while, they noticed that they could scroll on the modal and select the collections manually, which resolved the issue.