Testforblocks command doesn't work item detection in the storage block. (In the screenshot, the same block on the left and right of the command block and the same item inside the same space. The command block is detecting the testforblocks command whether the left and right blocks are the same.) Originally, after recognition, if the two blocks are the same, an electical signal is sent through the redstone comparator but there is no output. Please fix the bugs until the next version, thank you.