Daily quests, HUD getting temporarily disabled for an instant

Hello,
this is a random bug I noticed today.
I cannot replicate this until tomorrow but if anyone can do it, it would be nice to get a confirmation.

Going up and down the friendly Amalj'aas' camp with completed quests made the HUD temporarily vanish, like when interacting with the retainer's items window or shop window.
After getting the reward for all 3 quests, this didn't happen anymore. I didn't try after getting each reward.

Playing on PC.
The zone is Southern Thanalan (23,13/14)

Here it is a video showing the bug: http://www.youtube.com/watch?v=GKiFEC_mUyI

Greetings ZohnoReecho,

We thank you for posting your concerns regarding the HUD. I have made sure to submit all of your information to the development team and they will thoroughly investigate this matter based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on this thread, but I do recommend checking Here or Here for any details regarding the development team's investigation.

Thanks for your report!

- Furlamseere