Our QA found this issue after we upgrade to sam 2.7.
Timer messages displaying for untimed assessment
Created assessment with a lot of questions – it is not timed
When student clicks Next, timer messages briefly display before the next question is loaded
Watch the video and notice the flashes
I found this similar issue on trunk and 2.7 (http://qa3-us.sakaiproject.org:8086/portal). I do saw some message flash quickly when I navigate from question to question.