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What browsers show this problem? it's a problem with snap
Blockify has a limit of a thousand items. Don't use it for $#!&.
(I get annoyed when I make features that give you the power to do something you can't do elsewhere and then y'all complain about them. Maxing out the stage size, zooming blocks to nonsensical sizes, creating thousands of clones and blockifying hundreds of thousands of list items. shifting the color of black. Geez).
With the boolean list, the reason why it says it's false is not a bug, it's because you're using "is identical to". They're not the same list (even if they have the same items), so the block returns false.