So far I've tested it with Bahamut only. So happen to not have any rocks to test Summon Dragon. According to the skill description, it should last for 2 mins 40 seconds, which it did when I buffed it as usual. However, when the buff ends and Bahamut disappears, changing channel will cause it to automatically rebuff again (and Bahamut will still attack), BUT it only lasts for around 57 seconds. So to test this bug, you simply have to prepare a timer and:- 1) Cast Bahamut, wait for time-up (2 mins 40 seconds) and the dragon to disappear. 2) Change channel -> Here you'll see it rebuff by itself, and will last for 57 seconds.