MC-171079Comparators no longer work as expected reading containers through powered blocks
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Previously in 1.15.2 and below, a comparator that reads the contents of a container through a block would let the container's signal be overridden by a signal of the block itself, but only if it gives a strength of 15.
Since 20w06a, the container's signal strength is now always overridden by the block's signal strength if it is higher.
This feature was very useful in 1-wide tileable contraptions, where it can be used to detect full containers, etc.
