Players with y coordinates can be placed or destroyed by the border block or destroying the block of the y coordinates less than 0
There are similar problems when the player and block Y coordinate are too large, but the specifics will not be tested.

Whether to open the education edition will take effect

step 1:

Create a super flat world

Step 2:

Place a row of border squares and take out the wooden board

Step 3:

Switch survival mode

expected results:

Can not place or remove the blocks through the border block

actual results:

It is found that you can place or remove wooden boards (or other blocks) through the boundary block

Screen record file:https://wwn.lanzouy.com/iRyOp08f4ekh