The behaviour of wind charges having their positions manipulated using pistons and bubble columns has changed between 1.21.8 and the latest snapshots. Pistons moving a wind charge that is stationary will sometimes not move the wind charge far enough and bubble columns appear to accelerate wind charges more than they did in previous versions. As I am unable to pin-point the exact behaviours that are causing this issue I have designed a unit test for a wind charge alignment mechanism whose outcome has changed between 1.21.8 and the latest snapshot.
Steps to Reproduce:
Load the datapack “wind_charge_test” into a minecraft world
Use the command “/test run example:wind_charge_aligner”
✔ In 1.21.8 the test will succeed and hit the target in exactly 74 ticks
❌ In 25w37b the test will either fail or timeout with the wind charge not reaching its target
This bug report possibly relates to MC-295841 .