Water Box Bug

For me, holding the water box and pressing V just causes it to move down a few ticks. If you move away from it while still holding the water box, pressing V will still do the same thing but cause the green pointer line to no longer follow the box. It will instead point to where the box was originally placed. This will happen with all logic boxes and models though, not just the water box.

For more info on why a water box changes coordinates, you might want to look at this post: Lost Waterplane [Bug]. Basically if you're adding a second water box to your game - deleting existing water boxes also count - it will cause the box move towards the center of the game, but remain at the height you placed it at. To find it, just go to the height of the water plane, and then move towards point 0,0 of your game - use the vertical drawplanes to find it.

Hah, I see what this is.

Essentially if you've selected any object, it doesn't have to a logic cube, clicking [V] will focus your avatar onto the object. Same thing happens once you start editing a model. Now, what's weird is if you do this while holding down LMB, and thus allowing you to move the object, it will move once you click [V] - that should not happen. I assume what's happening is if you hold down LMB the selected object will always at a certain distance away from you, with mouseposition being an offset so you can still move it around. When the avatar is moved to focus on the object, the object will be moved since you're holding down LMB.

Now, the very interesting part here, which you get bonus points for DrVista, is that this isn't quite what happens with the waterplane. It will focus on actual water at the x and z coordinates your avatar is it instead of the cube.

I'll add this issue immediately