Hey Klassux! The first picture I am asking you about is this: Is there always a hole there. If so, then we need to contact Woona about this so the build team can fix it (she is the Build Team Captain). If not, then I think that it is a bug that just happens every now and then, but fixes its self. As for the second pic, there is a glitch where if a furnace becomes solid, it leaves a block where it became solid, because of this, you are technically
inside a block, which allows you to move around inside other blocks. The reason why you fell was there was probably no block(s) under where you could have been moving, and the result of that was you falling into a small, enclosed space.
You can avoid this stuff by not getting close inside a furnace when it is about to become solid. Also, this is considered Glitch Exploiting, and will put you in a 7 day ban if you keep on doing that with a random person or your friend(s). Thanks for the report

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