Thinksurance interview questions

Had a First Video Interview. The recruiter was really good. Then I received a Coding Challenge on Hackerrank. That coding challenge was adequate however some of the test cases were not mapped in the hackerrank itself so it was not detecting whether or not the test case passed or not even though the output was the same. The Technical team was informed however they did not take any action and were persistent that they were right. I double checked with some seniors and they agreed with me that there was indeed a bug. This attitude was wrong.