PlayerBlockBreakEvents cannot prevent render changes on client side

[enigmartyr]

Within PlayerBlockBreakEvents it is stated that PlayerBlockBreakEvents.BEFORE is called "before a block is broken" and "only called on the server, however updates are synced with the client". The issue is, only awaiting client-server sync still leaves render artifacts as the client calls world.setBlockState within ClientPlayerInteractionManager.breakBlock. So registering a callback to PlayerBlockBreakEvents.BEFORE with the intention of canceling the block break results in the block flickering on the client side since the client breaks it anyways and it isn't until syncing with the server afterwards that it is updated to the original value.