Hello Minecraft Developers, I found out that when a water source is placed atop of soul sand, it creates a upward bubble column, but when you remove the water source with the dispenser, the water gets removed but the bubble column stays.  It has no effect on players or entities.  I also found that water particles don't pass through trap doors.  I was trying to make a realistic shower with water columns that bounce armor stands around and make lots of water particles.  The particles were supposed to fall through the spaces on an iron trap door, but they just floated on top of it.

Thank you, a Underdoglegend1319

P.S. Best gamer ever, keep up the good work!