Extra requests for each symbol typed into the fields on the /apply/<something>

[ZuleykhaPavlichenkova-TomTom]

@frontend
Steps:

1. Open /apply/
2. Open the Inspector (F12) -> Network, choose "Fetch XHR"
3. Start typing something into any field and look at the Inspector

Expected result:
No requests for each interaction with the field

Actual result:
GET requests for every interaction (typing a symbol) with a field (response code 304 Not Modified)