The Bug
When a Tree generates next to a lava pool the leaves can turn into stone. This is a recurrence of MC-48340
Seed & Coordinates
Seed: 5065972378046467357
Cords: /tp @s 88 64 -668
Related issues
Attachments
Comments

[media][media]

So do End Portal blocks.
Seed: -1777561445
Co-ords: /tp @s -1419 21 1875
[media]

Paint pretty sure that is a different issue. I recommend creating a new report about that if it doesn't exist already.
Can confirm in 21w03a.
Can confirm in 21w05b.