Random bug: The Int Buff from the vip buffer had a decreased duration and dissapeard.\
On the right, the whiteish icon which resembles the Int buff from the vip buffer is missing
http://i.imgur.com/XSNCtYL.jpg
Here you can see the Int buff icon. You can also notice the difference in the sp pool size.
http://i.imgur.com/CVckdyt.jpg
What I was doing at the time:
I had full buffs on my character.
I first went to the malaya dungeon and then to the field to the right of the town.
I was clicking on the bamboo for the daily quest. I logged off.
I went on my sura and used Blessing 10 on my Sura. I used him to get some holy water. I then put those in the storage.
I logged back on my Shadow Chaser. I went back to storage. I then went back to the field on the right. After a bit, I noticed the int buff was running out. My other stat buffs were at the regular remaining timers.
Just a random bug that happened.