The bug
The big dripleaf stem's texture is stretched up and down. It might be hard to tell but the pixels aren't perfectly square. big_dripleaf_stem
and big_dripleaf
are both affected.
Linked issues
is duplicated by
relates to
Attachments
Comments
Can confirm.
Can confirm in 21w06a.
Can confirm in 21w07a.
Can confirm in 21w11a.
Can confirm in 21w13a.
Can confirm in 21w14a.
Can confirm in 21w16a.
Can confirm in 21w17a.
Can confirm in 1.17.

Can confirm in 1.17.1 Release Candidate 2.
Can confirm in 1.17.1.

After doing some examining, it doesn't look so much like the model is stretched vertically - otherwise, each pixel would be taller than that of any other block - but rather, the model is squished horizontally, making it thinner than it should be (and also producing the same effect with the pixels).
Can confirm in 1.18.
Can confirm in 1.19.
Can confirm in 1.19.2.
Can confirm in 1.19.3.
Relates to MC-122701