Red Mage : Aero/Thunder mana bug

[Azostar]

I have attached a GIF showing the issue in real time.

https://media.giphy.com/media/65MqVU...y1UI/giphy.gif

As you can see in the gif casting Verthunder right after Jolt II/Impact only causes my black mana to increase by 5, instead of 11 as shown on the tooltip.

Frequency: Often
World name: Cerberus
Character name: Azo Eister
Monster name: Any
Class/Level: Red Mage 70
Party or solo: Both
Steps:
1. Cast Impact/Jolt II
2. Repeatedly and rapidly use Verthunder/Veraero ability while casting

Connection Specs
- Type of internet connection/provider: Virgin Media
- Modem maker/model number: Superhub 3

■ PC Specs

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

SYSTEM_OS Windows 10 Home 64-bit (6.2, Build 9200) (16299.rs3_release.170928-1534)
SYSTEM_CPU Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (8 CPUs), ~4.0GHz
SYSTEM_CORE_NUM SYSTEM_CORE_LOGIC 8 SYSTEM_CORE_PHYSICS 4
SYSTEM_BIOS V1.13
SYSTEM_LANGUAGE English (Regional Setting: English)
SYSTEM_MEMORY 8140.621MB
SYSTEM_VIRTUAL_MEMORY 134217727.875MB
SYSTEM_PAGE_FILE 15257.738MB
SYSTEM_STORAGE C:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 237.921GB SYSTEM_FREEDISC_SPACE 27.493GB
SYSTEM_DIRECTX_VERSION DirectX 12
SYSTEM_GRAPHICS NVIDIA GeForce GTX 960
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY1
SYSTEM_GRAPHICS_CHIP GeForce GTX 960
SYSTEM_GRAPHICS_MAKER NVIDIA
SYSTEM_GRAPHICS_VRAM 1919.688 MB
SYSTEM_GRAPHICS_SHARED_VRAM 4070.311 MB
SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (60Hz)
SYSTEM_GRAPHICS_DRIVER C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_d37ca5c2cde53609\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_d37ca5c2cde53609\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_d37ca5c2cde53609\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_d37ca5c2cde53609\nvldumdx.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 23.21.0013.8871
SYSTEM_GRAPHICS_DRIVER_DATE 12/15/2017 01:00:00
SYSTEM_GRAPHICS_DRIVER_LANGUAGE English
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_SOUND Speakers (High Definition Audio Device)
SYSTEM_SOUND_DEVICE_ID {196D9CB2-A163-427D-9AA8-425E86EA5903}
SYSTEM_SOUND_DEVICE_NAME HdAudio.sys
SYSTEM_SOUND_DRIVER_VERSION 6.02.16299.0251
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 2/21/2018 00:00:00
SYSTEM_SOUND Speakers (Steam Streaming Microphone)
SYSTEM_SOUND_DEVICE_ID {5B1299F5-4DF1-4C01-8FEF-97A7EFDB93B7}
SYSTEM_SOUND_DEVICE_NAME SteamStreamingMicrophone.sys
SYSTEM_SOUND_DRIVER_VERSION
SYSTEM_SOUND_DRIVER_LANGUAGE
SYSTEM_SOUND_DRIVER_DATE 7/28/2017 00:00:00
SYSTEM_SOUND Speakers (Steam Streaming Speakers)
SYSTEM_SOUND_DEVICE_ID {640F9729-B8A7-4C06-9E91-375C5D4EA4E5}
SYSTEM_SOUND_DEVICE_NAME SteamStreamingSpeakers.sys
SYSTEM_SOUND_DRIVER_VERSION
SYSTEM_SOUND_DRIVER_LANGUAGE
SYSTEM_SOUND_DRIVER_DATE 7/20/2017 00:00:00
SYSTEM_INPUT {6F1D2B60-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Mouse
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 5 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 {0F9A3930-EA78-11E7-8005444553540000}
SYSTEM_INPUT_NAME Steam Controller
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {0F9A6040-EA78-11E7-8006444553540000}
SYSTEM_INPUT_NAME Steam Controller
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {0F9A6040-EA78-11E7-8007444553540000}
SYSTEM_INPUT_NAME Steam Controller
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {3E507EC0-EA77-11E7-8001444553540000}
SYSTEM_INPUT_NAME USB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 897 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {3E507EC0-EA77-11E7-8002444553540000}
SYSTEM_INPUT_NAME USB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 3 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {3E507EC0-EA77-11E7-8003444553540000}
SYSTEM_INPUT_NAME USB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {0F9A8750-EA78-11E7-8008444553540000}
SYSTEM_INPUT_NAME Steam Controller
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0

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

[Azostar]

I am dumb please delete this as it is part of game mechanics.