Direct Chat/Text Input Bug Since 2.51

I'm having an issue in which I press a key on my keyboard, and normally it would input the key, now, it's as if it ignores the key as input and treats it as a "chat activation", lighting up my cursor in the test input box, but not rendering the actual text. Subsequent key presses after this "chat activation" do enter text. Keyboard is working fine outside of the game, and within the game, my Direct Chat option is selected. It's very annoying. Example, try to type "Hello" and end up with "ello" as the H is ignored as text input and treated as "chat activation" instead. I would have to hit the H key twice now for it to render one H, with subsequent key presses behaving normally.

Template below.

Time: 7:00 PM EST - Now
Frequency: Always since patch 2.51
World name: Adamantoise
Character name: Nikki Seven
NPC name: n/a
Monster name: n/a
Class/Level: 50 PLD
Party or solo: Both
In-game time: n/a
Area and coordinates: All areas
Steps:
1. Try to enter text via keyboard
2.
3.
<*Add more steps if necessary>

Connection Specs
- Type of internet connection/provider: PTD.net
- Modem maker/model number: n/a

PC Specs
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From Speccy:

Operating System
Windows 7 Ultimate 64-bit SP1
CPU
Intel Core i7 3770K @ 3.50GHz 51 °C
Ivy Bridge 22nm Technology
RAM
32.0GB Dual-Channel DDR3 @ 799MHz (11-11-11-28)
Motherboard
ASUSTeK COMPUTER INC. SABERTOOTH Z77 (LGA1155) 25 °C
Graphics
SAMSUNG (1920x1080@60Hz)
2047MB NVIDIA GeForce GTX 680 (EVGA) 35 °C
2047MB NVIDIA GeForce GTX 680 (EVGA) 31 °C
ForceWare version: 347.52
SLI Enabled
Storage
335GB Intel Raid 0 Volume SCSI Disk Device (RAID)
1863GB Western Digital WDC WD2001FASS-00W2B SCSI Disk Device (SATA) 26 °C
2794GB Seagate ST3000DM ST3000DM001-1CH1 SCSI Disk Device (SATA) 20 °C
1024GB QNAP iSCSI Storage SCSI Disk Device (iSCSI)
Optical Drives
HL-DT-ST BD-RE WH10LS30 SCSI CdRom Device
Audio
Sound Blaster Z

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Laptop Model Name: n/a
Laptop Model Number: n/a

Gamepad Manufacturer: Sony
Gamepad Model Name: Dual Shock 4
Gamepad Part Number: ??

Browser Information
- Name and version of the browser currently in-use: Firefox 35.0.1
- Internet Explorer Version: 11