completed quests bug?

[ceoils]

I have more than 1 quest in my log that is completed yet cannot hand in, no submit button.
1 of which is a guild quest that 77 of us had to complete.

[iceblink2013]

These are probably "waiting" quests. Another quest needs to be finished before you can finish this one. (Might be an invisible guild quest if you recently joined a guild, ask your fellow guild members).