[MC-122167] Game Crashes on Title Screen

On starting the game, and focusing the Minecraft window, the game stops with no output to the log.
Output Log:

[2017-11-22|08:56:15.421] [Client thread/INFO]: Setting user: Astrorious
[2017-11-22|08:56:20.290] [Client thread/WARN]: Skipping bad option: lastServer:
[2017-11-22|08:56:20.340] [Client thread/INFO]: LWJGL Version: 3.1.2 build 29
[2017-11-22|08:56:24.979] [Client thread/INFO]: Reloading ResourceManager: Default
[2017-11-22|08:56:26.148] [Client thread/WARN]: Missing sound for event: minecraft:block.pumpkin.carve
[2017-11-22|08:56:26.157] [Sound Library Loader/INFO]: Starting up SoundSystem...
[2017-11-22|08:56:26.372] [Thread-2/INFO]: Initializing No Sound
[2017-11-22|08:56:26.372] [Thread-2/INFO]: (Silent Mode)
[2017-11-22|08:56:27.245] [Thread-2/INFO]: OpenAL initialized.
[2017-11-22|08:56:27.248] [Sound Library Loader/INFO]: Sound engine started
[2017-11-22|08:56:34.269] [Client thread/INFO]: Created: 1024x512 textures-atlas
[2017-11-22|08:56:38.343] [Client thread/INFO]: Narrator library for x64 successfully loaded
[2017-11-22|08:56:38.367] [Client thread/ERROR]: Realms module missing