Waterlogged blocks turn lava into obsidian or cobblestone on all sides, even those water doesn't flow out of

Affects 1.13.1-pre2.

confirmed for 1.13.1

confirmed for 1.14

Please make the cobblestone gen part a feature

The same is true for the new snapshot 20w10a

Affects 20w27a

Can confirm in 20w51a.

Can confirm in 21w03a.

Can confirm in 21w05a.

Can confirm in 21w06a.

Can confirm in 21w07a.

Can confirm in 1.16.5 and 21w20a.

Can confirm in 1.17.1.

I am able to confirm this behavior in 21w41a. Here are some extra details regarding this problem.

The Bug:

Lava converts into obsidian or cobblestone when coming into contact with waterlogged blocks even if the water doesn't visually touch the lava.

Steps to Reproduce:

• Build the setup as shown in the attachment below.

• Break the diamond block.

• Take note as to whether or not lava converts into obsidian or cobblestone when coming into contact with waterlogged blocks even if the water doesn't visually touch the lava.

Observed Behavior:

Lava converts into obsidian or cobblestone when coming into contact with waterlogged blocks even if the water doesn't visually touch the lava.

Expected Behavior:

Lava would not convert into obsidian or cobblestone when coming into contact with waterlogged blocks when the water doesn't visually touch the lava.