When submitting a bug report, please use the below template and thoroughly fill out the necessary information.

Date & Time: Jan 8th 2019 @ 17:30 pst
Frequency: always
World name: Sargatanas
Character name: Arche Koeln
Retainer name: n/a
NPC name: n/a
Monster name: n/a
Class/Level: n/a
Party or solo: solo
In-game time: n/a
Area and coordinates: Limsa Lominsa
Housing: no
Steps:
in chat, type:
/c "character name
/c "character name"
/c "character name"@Sargatanas
/c "character name@Sargatanas"

and receive errors saying "Player Name is not a valid PC name"

same goes for /follow
which results in "Player Name is not a valid target"

The change to how player names are formatted seems to have broken it for other things besides /tell.

Connection Specs
- Type of internet connection/provider: shaw, fiber
- Modem maker/model number: unknown

■ PC Specs

To obtain the system information, open the FFXIV launcher and select Config → System Information → Display.

-=-=-=-=- System Information -=-=-=-=-

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-=-=-=-=-=-=- FFXIV Information -=-=-=-=-=-=-

MyDocument C:\Users\tasotei\Documents
ProxyEnable 0
ProxyServer unspecified
ProxyOverride unspecified


-=-=-=-=-=-=- System Information -=-=-=-=-=-=-

SYSTEM_OS Windows 10 Pro 64-bit (6.2, Build 9200) (17134.rs4_release.180410-1804)
SYSTEM_CPU AMD Ryzen 5 1600X Six-Core Processor (12 CPUs), ~3.6GHz
SYSTEM_CORE_NUM SYSTEM_CORE_LOGIC 12 SYSTEM_CORE_PHYSICS 6
SYSTEM_BIOS BIOS Date: 07/13/17 18:21:21 Ver: 05.0000C
SYSTEM_LANGUAGE English (Regional Setting: English)
SYSTEM_MEMORY 16316.859MB
SYSTEM_VIRTUAL_MEMORY 134217727.875MB
SYSTEM_PAGE_FILE 18748.859MB
SYSTEM_STORAGE C:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 223.471GB SYSTEM_FREEDISC_SPACE 75.997GB
SYSTEM_STORAGE D:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 1863.000GB SYSTEM_FREEDISC_SPACE 1548.273GB
SYSTEM_STORAGE E:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 931.511GB SYSTEM_FREEDISC_SPACE 123.183GB
SYSTEM_STORAGE F:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 1862.891GB SYSTEM_FREEDISC_SPACE 1762.480GB
SYSTEM_STORAGE G:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 465.745GB SYSTEM_FREEDISC_SPACE 20.118GB
SYSTEM_STORAGE H:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 1862.984GB SYSTEM_FREEDISC_SPACE 387.035GB
SYSTEM_DIRECTX_VERSION DirectX 12
SYSTEM_GRAPHICS NVIDIA GeForce GTX 1080
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY1
SYSTEM_GRAPHICS_CHIP GeForce GTX 1080
SYSTEM_GRAPHICS_MAKER NVIDIA
SYSTEM_GRAPHICS_VRAM 8079.000 MB
SYSTEM_GRAPHICS_SHARED_VRAM 8158.430 MB
SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (60Hz)
SYSTEM_GRAPHICS_DRIVER C:\Windows\System32\DriverStore\FileRepository\nvaki.inf_amd64_341cb1ed786e2f65\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvaki.inf_amd64_341cb1ed786e2f65\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvaki.inf_amd64_341cb1ed786e2f65\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvaki.inf_amd64_341cb1ed786e2f65\nvldumdx.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 23.21.0013.9077
SYSTEM_GRAPHICS_DRIVER_DATE 1/22/2018 16:00:00
SYSTEM_GRAPHICS_DRIVER_LANGUAGE English
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_SOUND Speakers (Sound Blaster Audigy Fx)
SYSTEM_SOUND_DEVICE_ID {141E349D-5850-4C19-B1A3-87A407AE934B}
SYSTEM_SOUND_DEVICE_NAME HdAudio.sys
SYSTEM_SOUND_DRIVER_VERSION 6.02.17134.0001
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 6/2/2015 00:00:00
SYSTEM_INPUT {6F1D2B60-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Mouse
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 8 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6F1D2B61-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 128 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6C2558B0-5A3A-11E8-8002444553540000}
SYSTEM_INPUT_NAME Multi-media
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 6 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6C266A20-5A3A-11E8-8005444553540000}
SYSTEM_INPUT_NAME Controller (XBOX 360 For Windows)
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 5 SYSTEM_GAMEPAD_BUTTON 10 SYSTEM_GAMEPAD_FOV 1
SYSTEM_INPUT {6C261C00-5A3A-11E8-8003444553540000}
SYSTEM_INPUT_NAME BackLightKB
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6C246E50-5A3A-11E8-8001444553540000}
SYSTEM_INPUT_NAME Gaming Mouse G600
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {29E41AC0-DEB2-11E8-8004444553540000}
SYSTEM_INPUT_NAME HUION HID
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {29E41AC0-DEB2-11E8-8006444553540000}
SYSTEM_INPUT_NAME HUION HID
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 7 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6C266A20-5A3A-11E8-8004444553540000}
SYSTEM_INPUT_NAME HID-compliant consumer control device
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 7 SYSTEM_GAMEPAD_FOV 0