i am having the same problem since v23 i think. I have tried disabled all extensions but dragon still takes a long time to close. It is also happening on my parents computer so it seems to be a bug.
both my systems are 32 bit. The only thing that i can think of is they are both old computers. atleast 5 years. I know its not comodo firewall interfering since i currently dont have it installed. i wonder if its the clear history etc on exit. let me try disabling them.
i tried each option individually and “clear browing history” on exit is culprit. None of the other options caused the slow exit. So i guess this could be considered a bug? if so i can report it.
EDIT: just to confirm my suspicion, captain can you try enabling it and see if dragon takes a few seconds to close?