A few times I have generated a map and a cave goes all the way underneath it and it reaches the bottom where lava is. Well I just did survival and found one of these caves flooded with water when I found where it hits lava the lava wasn't stone like it should be however when I places a block in the lava and deleted it it turned the adjacent blocks into stone. Sorry if this has already been posted.
I started up survival mode and generated some maps and on the third one I found a pillar that was dirt and stone but it was floating! Notch should fix this problem because it looks weird. Sorry for no pics I couldn't figure out how to screenshot.
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Q D L P A
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Peri
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Spaceman96!
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I build a nuclear power plant.
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Edit: Sorry this is not a bug this is a glitch
Double edit: Sorry I'll make my titles better.