Cannot roll Need on class-appropriate gear

[CeasarArcana]

Time: First occurred on 8-12-2014, 11:44pm PST (GMT-8)
Frequency: Nearly every time treasure coffers are opened.
World name: Aether - Cactuar
Character name: Nikolas Kaulitz
NPC name: N/A
Monster name: N/A
Class/Level: Gladiator 15-25
Party or solo: Party
In-game time: Unknown
Area and coordinates: First occurred in Sastasha, at (12,10).
Steps:
1. Defeated a boss that dropped a treasure coffer, or otherwise encountered a treasure coffer (this happened on multiple occasions, with varying circumstances).
2. Opened the treasure coffer and it contained GLA/PLD gear.
3. Attempted to roll Need, but the game would not allow me.

Connection Specs
- Type of internet connection/provider: Comcast Cable via ethernet cord (38.4Mb/s down, 10.3Mb/s up)
- Modem maker/model number: Unknown, likely Comcast proprietary.

PC Specs
-=-=-=-=- System Information -=-=-=-=-
Toshiba Satelite E305-1995 (produced in 2011)
Intel i5 @4x 2.33GHz
Intel HD Graphics 3000M (Sandy Bridge) @129.6GFLOPS, 1.35GHz, 2.048GB VRAM.
6GB Main RAM
Inbuilt screen is broken, so the machine is hooked up to a secondary monitor
1280x1024, 75Hz, 32-bit colour. (Secondary monitor)

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Laptop Model Name: Toshiba Satelite
Laptop Model Number: E305-1995

Gamepad Manufacturer: N/A
Gamepad Model Name: N/A
Gamepad Part Number: N/A

Browser Information
- Name and version of the browser currently in-use: Google Chrome 36.0.1985.143 m
- Internet Explorer Version: IE10 installed, all IE features disabled.

Additional
Screenshot of the bug: http://i.imgur.com/2kPpInE.jpg