Cutscene Interruption - Action Canceled You are Under Attack

FFXIV Version: 2013.11.16.0000.0001 (766889)
Language Setting: English

Date: 11/25/2013, and any time before that date.
Frequency: Always
World name: Hyperion, and all other worlds (irrelevant)
Character name: Dalimin Dataru, and all other characters (irrelevant)
NPC name: N/A
Monster name: Deepvoid Soul
Class/Level: 50
Party or solo: Solo
In-game time: Any
Area and coordinates: Taking the Black - Eastern Thanalan - (20x, 20y)

Steps:

Quest: "Taking the Black"
Issuing NPC Location: Yayake Ul'dah - Steps of Nald - Arrzaneth Ossuary (7-12)
Error: Interruption for cutscene when other players spawns monsters for their quest, thus interrupting other players who have completed the battle and watching their cutscene. Any monsters will interrupt the player giving the error: "Action canceled. You are under attack." during the cutscene.

Step by Step Walkthrough:

1. Investigate the planar fissure at Highbridge and procure the blood of any fiends that emerge.
2. Pour the voidsent blood into the planar fissure. (Issue here, with cutscene interruption)
3. Speak with Yayake at the Thaumaturges' Guild.
4. Report to Lalai at Milvaneth Sacrarium.

Greetings lackofwords,

We thank you for posting your concerns regarding Cutscene Interruption. 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!