This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
The attached vtu file has two cells/elements. The first cell has a blockId of 1, and the second with a blockId of 2. If I create a histogram with two bins on the block ids, the highest block number is always discarded. This happens on larger models too, where you can have lots of elements/cells that aren't in the histogram.