Conditional Chain Command Block checks block behind it, not last command in chain

When chaining together Chain Command Blocks, setting one to "Conditional" mode will cause it to check the block behind it, rather than the last block in the chain. This causes issues with many creations, both in-game and with third-party tools, and (as far as anyone can tell) is unintended. If it is intended, it should probably be changed anyway.

See attached image for exact details.