How to disable profiling

First I enable profiling with clicking on “Data Preview” in the “Profiler” Tab of the Session Frontend, and then I want to disable it again with closing the Session Frontend or clicking on “Data Preview” again, but it stays enabled, I still see these message on the top left:

http://puu.sh/hUtlM/6c0e45c74c.png

How can I disable profiling after I enabled it?

bump ) same here