If you place a cobweb in water and drop concrete powder onto it and it will go into water as concrete powder but after a little bit it will break and appear in the cobweb.
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duplicates 1
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Falling blocks break and drop as items after 30 seconds. When you drop the concrete powder through multiple cobwebs, it would take more that 30 seconds to reach the ground.
The appearance of the conrete powder landing and being moved by the sticky pistons is due to (MCPE-180988), so I am resolving this report as a duplicate.
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