Mouse Click Issue

There's an issue about mouse clicks (Down/Release) and maybe mouse coordinates.

To get around it in the menus, buttons need to be clicked first and dragged a little to be highlighted and then re-clicked to trigger the button. When playing, I need to maintain a mouse button down in order for the head to turn/tilt, else the head won't move. It's not affecting the Launcher or other applications.

I tried to re-install (Including Application Support) and it was the same with 1.7.9 and 1.7.10. The Issue disappeared for a time for no apparent reason and came back another day. Also, I manually updated LWJGL to 2.9.1 as it was suggested in some forums but nothing changed.

Don't seem to be any duplicate issue of this.