Under the Chinese input method (Microsoft Pinyin - Simplified - China), when pressing the following key combination simultaneously: ctrl + w + space, the player is supposed to jump and sprint forward, but in reality, the player sprints forward without jumping (even if the keys are still held down). If only w + space is pressed, the player can move forward and jump normally.
From my observation, as long as the CTRL key is held, the space key cannot be used.
This issue **does not** occur under the English input method.
Furthermore, the Chinese input method seems to have a delay, which diminishes as the game runs longer (I am not sure whether this is caused by Minecraft or the operating system).