taksdd

Hi, I noticed drills and bits from my makita keep falling out or in. I try to secure the chuck and it has some weird behaviours. Sometimes when I secure bits the chuck it doesn't click. Sometimes it makes few quiet clicks and sometimes it makes one loud click. When I unsecure the bits sometimes there is a small click, sometimes a loud click and sometimes completely nothing. Am I doing something wrong? Please see attached video Makita Fail