Describe the bug
I tried to fill up the bathtub and created a water source underneath it. It works kinda. The message won't show up and the soundeffect is there but the water is missing. I need to fill the bathtub with a waterbucket to see the water and I need to empty it with an empty bucket if I want to empty the bathtub.

• Minecraft Version: Minecraft Spongeforge 1.12.2 (Server)
• Mod Version: 6.3.0