What is happening:
The first quest "Foal Life Consequences" is impossible to complete. The quest doesn't update properly.
What should be happening:
After talking to Dancer, Maplesweet and Polly Poppet, there should be a marker and an option to go back to Frizzy Stradlin and finish this quest.
Steps to reproduce the issue:
Just proceed with the quest as usual - after running around the school and jumping on the haystack, talk with the aforementioned three characters.