Logged in just so I could tell you about my experience with this bug.
I returned to GW2 10 days ago, 7 of those days I spent leveling an alt, a Thief. During that time I saw no issues with dailies, it worked as intended.
The last 3 days I returned to my main, a Mesmer, and the bug started to happen.
The first time I thought it was just bad luck, but the next day it repeated.
Yesterday I tried logging out before the reset (about 1 hour before), but it didn’t do the trick.
Today I logged to my main (Mesmer) just so I could sell something on the TP then logged to another character (Elementalist).
Today my dailies reset without any issue while I was still in-game.
Now, I’m not saying it is the Mesmer class that is bugged, but perhaps a certain combination of traits, equips, skills, etc.?
I’ll try tomorrow with a different class.