[MC-139734] Certain block configurations cause sharp contrasts when smooth lighting is enabled

When smooth lighting is enabled, certain block configurations can cause sharp lines to appear causing lighting to look rough.

Related issues

migrated 2018-11-21T19:18:28Z

[media][media][media]

migrated 2019-07-19T19:17:34Z

This issue affects 1.14.4

Avoma 2021-01-08T12:46:04Z

Can confirm in 20w51a.

Avoma 2021-02-05T14:22:24Z

Can confirm in 21w05b.

Avoma 2021-02-13T14:28:13Z

Can confirm in 21w06a.

Avoma 2021-12-22T19:23:17Z

Can confirm in 1.18.1.

EyeBlox 2023-05-21T19:42:31Z

Can confirm in 1.20 Pre-release 4