> When I click log out, a pop up box says are you sure
Probably a form and HTT does not click on forms. So may be irrelevant.
If you hover over the button is there a displayed url?
> When I have that URL, how do I filter it out?Add filter like -*/logout*

Always post the command line used (log file line two)
Try a non HTT browser ID as some site don't like it.