Summoning Falling Block entity with the method World.spawnFallingBlock(Location, BlockData) spawns the entity twice causing a duplicate UUID in the world and spamming the console.

From my understanding the problem is caused by:

• Spawning the entity in FallingBlockEntity.fall(Level, BlockPos, BlockState) unless the EntityChangeBlockEvent was cancelled
• Spawning the entity in the CraftWorld.spawnFallingBlock(Location, BlockData) regardless of weather the entity was already spawned in the previous method

Picture of the problem: https://prnt.sc/PN7OeZU77H75

Minimal plugin to reproduce: https://prnt.sc/Cb4-xqEzSpEh

The spam: https://prnt.sc/6OKbdg28y0KO

(added as a .txt file in attachments & as a plugin .jar)