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Update suppression is the practice of forcing the game to skip block updates. This works by causing enough block updates in a single tick to cause a stack overflow in a way that doesn't crash the game. Update suppression has potential applications for portal slicing, block duplication, controlled crashing, and placing blocks in otherwise impossible locations, such as a sign or torch floating in mid-air, or a flower on non-dirt-based blocks.

With the changing of update order in Java Edition 22w11a, update suppression was "fixed". This was intended as MC-249082 was resolved as "Works As Intended". Nevertheless, the change was reverted in 22w12a and a separate but related bug report, MC-249181, showed that the "bug" was fixed in this snapshot.

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