Hi.

I encountered a glitch recently. It was on the Nintendo switch. I was going to make this on the console edition one, but I'm pretty sure the Nintendo switch is now classed as bedrock edition. Anyways, I was in creative mode making a replica of green hill zone from sonic. For the dirt, I used a checkered pattern using red sand and soul sand. After realising it was wrong, I changed it. So, there was a formation of blocks that went like this:

One block of soulsand at the bottom, and 3 blocks of red sand at the bottom.

So, I broke the red sand block that was on top of the soulsand whilst quickly placing a soulsand in that cubic area. Suddenly, the red sand fell even though a block was below it. One of the sand landed exactly where the soulsand was and disappeared. The sand that was at the very top dropped down and landed on top of the soulsand. 

Notes: I have already tested and can confirm that all gravitational blocks are effected. I don't think other blocks can replace the soulsand, but Don't take my word for it.