[MC-187732] Replacing Water with Lava with the fill/setblock commands turns all blocks except south east corner into Obsidian

All blocks are obsidian except for the upper south east corner

To reproduce:

/fill ~-1 ~-1 ~-1 ~-9 ~-1 ~-9 minecraft:water

/fill ~-1 ~-1 ~-1 ~-9 ~-1 ~-9 minecraft:lava

Linked issues

relates to 1

MCPE-100607 Replacing water with lava via /fill generates obsidian Open

Attachments

MC-187732.mp4

Comments 13

galaxy_2alex 2020-06-05T22:35:58Z

The fact it creates obsidian is most likely intended - the bug is that it misses the south east corner. If you do want to properly replace water with lava, add "destroy" at the end of the /fill command

Henry Fleming 2020-06-05T22:43:40Z

using "destroy" will work, but then you could not use "replace"

Henry Fleming 2020-06-06T23:27:17Z

I guess if you need to use "replace" you can fill with air then fill lava

Avoma 2020-12-03T10:21:49Z

Can confirm in 20w49a.

Avoma 2021-01-18T16:10:01Z

Can confirm in 1.16.5.

3 more comments

ampolive 2021-12-21T00:08:04Z

As MCPE-100607 is tracked as a bug in Bedrock Edition, I am not sure if /fill turning water into obsidian is intended.

user-f2760 2021-12-21T09:10:44Z

Yeah, it updates the lava (which is next to water) before placing the remaining blocks; it should first replace all blocks, and only then update them.

Avoma 2022-05-09T08:44:00Z

Can confirm in 1.18.2 and 22w18a.

Avoma 2022-07-23T16:37:24Z

Can confirm in 1.19.

Avoma 2022-09-17T09:16:32Z

Can confirm in 1.19.2.