[MC-122194] Comparators don't work

If I try to use a comparator on any block with an inventory it just doesn't output any signal.
Yes, I did put items in the inventory of the block

Expected:
Comparator giving a redstone signal

Linked issues

bemoty 2017-11-22T20:56:23Z

Thank you for your report!
However, this issue is a Duplicate of MC-122159.

If you have additional information, please add it to that report.
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