When aquiring a target with the Guided Missile Launcher or Grim Reaper, by switching the items in the hotbar and then switching back the target lock will stay locked and not go away like it normally does when you release the right mouse button. Though it still will switch when you hit the right mouse button again. I think it's probably because it doesn't recognize the right mouse button going down and thus just stays that way.
When aquiring a target with the Guided Missile Launcher or Grim Reaper, by switching the items in the hotbar and then switching back the target lock will stay locked and not go away like it normally does when you release the right mouse button. Though it still will switch when you hit the right mouse button again. I think it's probably because it doesn't recognize the right mouse button going down and thus just stays that way.