@disturbed666(View Post) Because the water eats the fire that's created before the fire can make the rubidium explode. It's been like that for a little while, actually. (Ever since they changed water to make it actually put out fire)
How to Reproduce: Put a little fire first, Then some TNT. Then, while the TNT is Exploding, Hold the TNT to make more TNT, and then just Shake it around. At somepoint, when you get enough TNT on your screen, it stops Exploding.