I am querying for results of /search/advanced. The request I am sending is

https://api.stackexchange.com/2.2/search/advanced?key=`key`&access_token=`access_token`&site=stackoverflow.com&page=1&pagesize=20&order=desc&sort=relevance&q=signalr&filter=!tRhd)yG5RfdF0fv8E-NwvlZNrfzIwPf  

The question as marked in this snapshot is present in the json result with one rank below and the question with lesser rank is coming above.

Also, question titled SignalR - StartUp has is_answered = true even when there is no accepted answer. Another question signalR undefined has is_answered = false which has same conditions, i.e., no accepted answer. Here the first case is giving wrong results.

Kindly give access_token and key in the above link.