Ravana Extreme - Chandrahas destroying all walls

ISP:
TPG (Australia)

Type of Internet Connection:
ADSL1

Internet Connection Speed:
2Mb/s

Date & Time:
30/06/2015

Frequency:
State how frequently the issue occurs. Please select from the following.
Not always, but fairly consistently

Character Name:
Delenia Forcentis

Race:
Au Ra/Raen/F

World:
Tonberry

Class/Level:
Monk, Level 60

Area and Coordinates:
Thok ast Thok (Extreme)

Party or Solo:
Party - 8 members

NPC Name:
None

Monster Name:
Ravana

In-Game Time:
8PM GMT+10 to 11.30PM GMT+10

Steps:
1. Participate in the Thok ast Thok (Extreme) battle.
2. When Ravana uses Chandrahas, notice how many walls are still up.

Might be something from the latest hotfix implemented, but this mechanic now leaves the trial nearly uncompletable. Especially because this behaviour was never observed in the hotfix prior to the last one implemented.