Invisible Fire- Walking on a block that had fire on it makes you take damage as if the fire is still there

So I was walking around on my realms server inside a castle we made out of the Nether Reactor tower. There was fire that was randomly placed, and I didn't want it there. So I tapped on it to get rid of it. I then walked over the area that the fire was in, and I randomly took damage. It was almost like the fire was still there, but invisible....

Steps to reproduce:
1. Light a fire
2. Tap on it to get rid of it
3. Walk over the area that the fire was in
4. You take damage

I have included some images that show me taking damage randomly by walking on the "fire"

The first photos show me walking on a block that had a fire on it. Its the one thats in the center of the screen. The second one shows me standing on that block with a bit of damage taken.

The 3rd photo (different area) has the crosshairs placed on the block that had the fire. The 4th one shows me walking over the block taking damage.