I've already tried clicking and holding the left button of my mouse, and it just won't work! Whenever I press it, it opens the game menu instead.
Fixing this issue is quite simple. It is generally caused by modified keybinds (changing the controls). For some reason, mine seem to change "randomly" a lot, or maybe it is just my little siblings; anyway, here's how to fix it:
- Go to options (either in game or in the main menu) and select "controls"
- The first button is Button 1, AKA the left mouse button (generally used for breaking blocks)
- Ensure that button 1 is set to attack
If all else fails, I'd say you have set your mouse button to = escape some how. If you are using windows, I'd recommend checking out this page: http://windows.microsoft.com/en-au/windows-vista/change-your-keyboard-layout to change your keyboard layout back to default.