Floating Water

Steps to Repoduce:

1. Make a 3x3 square of buttons with no button in the middle.

2. Add blocks above the 8 buttons.

3. Put water in the middle of the 8 blocks.

4. Add 1 slab in the top block’s bottom half and add 1 slab in the bottom block’s bottom half.

5. Remove the slab in the bottom block’s bottom half, then remove the slab in the bottom block’s bottom half.

Expected Result:

The water should flow down into the block below.

Actual Result:

The water floats and does not flow into the block below.