Yup. I've been installing every update as they came out for almost 3 years now. That is until 5.2.7.6. That's when the bugs became more annoying than I cared to deal with. Went back to 5.2.6.5 a few days back and will stay there for a while.
.11 also has blue iris evaluation version and no way to go back to previous update in the check for update tab so must download it. I am no sure what is going on...