MP Client - Menu jam when host leaves

Operating System

Windows 7 Ultimate 64-bit SP1
CPU
Intel Core i7 4800MQ @ 2.70GHz 64 °C
Haswell 22nm Technology
RAM
32.0GB Dual-Channel DDR3 @ 798MHz (11-11-11-28)
Motherboard
Alienware 041W46 (U3E1)
Graphics
Generic PnP Monitor (1920x1080@60Hz)
Intel (Dell)
3071MB NVIDIA GeForce GTX 770M (Dell) 49 °C
ForceWare version: 372.70
SLI Disabled
Storage
698GB WDC WD7500BPKX- SCSI Disk Device (RAID)
10GB INTEL SSDMCEAW0 SCSI Disk Device (RAID)
Optical Drives
HL-DT-ST DVDRWBD CA40N SCSI CdRom Device
Audio
Realtek High Definition Audio

I was about to start a multiplayer game when the host left to reboot. I am not entirely sure what went wrong, but I think that I was typing a message and pressed enter to send the message without realising that he had left. It caused the game to menu to jam as may be seen in the video below, causing me to reboot the game.

2016-11-24 14-54-05.mp4

output_log.7z