Most of the autocomplete data is coming back looking pretty good, but property search has a significant number of events with mostly null values. Click Index varies, which suggests users are choosing an item from some list, but whatever that list and wherever it came from is not recorded in the schema.
Figure out where these are coming from and fix up the data collection so that we don't have all these null values, and so we know where the data is coming from.
Click logs originally requested in T196186.
Example bad records:
{"clickIndex":5,"clickPage":null,"context":"property","language":"gl","searchResults":"","searchTerm":""}
{"clickIndex":2,"clickPage":null,"context":"property","language":"ar","searchResults":"","searchTerm":""}
{"clickIndex":7,"clickPage":null,"context":"property","language":"en","searchResults":"","searchTerm":""}