Filtering Multiblock of HyperTreeGrid lead to invalid HTG block position
Loading 4 hyper tree grid next to each others and appending them into a multi-block so filters could be apply to all of them at once does not produce the expected result.
Adding an extract block to simplify block selection on which the filter get apply allow us to see that when only one block is available, then we get the expected result but if we have more than 1 active they start to stack on each other.
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