/locate uses all memory & crashes game

After using the /locate command to locate a shipwreck without success, the game starts to fill up all 1gb of alocated memory. Huge frame drops appends due to high memory usage. A crash appends sometimes.

The same does not appends if I alocate 2gb, but it still fills up more than 1gb of memory. The game starts to fill up more and more memory as I use the /locate command.

After the crash, crash-reports folder in .minecraft was empty, even though the launcher displayed crash message after waiting with the game window in "not responding" state.