Minecraft wiki entry for Development_versions, associated text: MCL-10463 - Minecraft freezing on startup
MCL-10963 - Application Data directory is not changed with --workDir argument
MCL-11268 - Native launcher does not set current working directory correctly when launching the game
MCL-11315 - Relative paths in Game Directory are used twice
MCL-11393 - On startup, the launcher freezes at around 80-90% and then crashes.
MCL-11565 - When I press play the minecraft launcher doesn't load and an error appears: "Game Crashed"
Fixed a bug that caused the game to start with the wrong arguments on some systems.
Fixed a bug that caused the game to start with the wrong directory setting when running with a custom directory.