The bug
The sides of flowing water/lava are moved a bit inwards (a bit like a cactus), making the edges overlap and not connect with other flowing liquid.
Note
This is not MC-1794, but instead a block model issue.
Related issues
is duplicated by
relates to
Attachments
Comments


This is related to MC-7882.

I think this is a duplicate of MC-1794

No, that one is dependent on view position, just one pixel and either white or black. This one is an error with the block model.

Affects 17w14a & 17w15a
Relates to MC-1794.

No, that's a different cause. This is about the block model. If you go near enough to this, you see a multi-pixel gap and an overlap. If you go near something that's affected by MC-1794, you will never see a gap of multiple pixels.

Well, maybe it could be an extremely small gap (seems strange now that I think about it).
However, MC-7882, which is also about the model but for clouds, has a related link to MC-1794. Since a faulty cloud model and that black dots on corners of blocks have a related link between each other but are far more unrelated compared to each other than this bug and MC-7882, this bug report should have a related link to MC-1794 at least.
By the way you forgot to add affects versions 17w14a & 17w15a 🙂

Possibly affects 18w20b

Relates to MC-128676

Affects 1.14.1

Confirmed for 1.14.2 release.

Confirmed for 1.16.1.
Can confirm in 20w48a.
Can confirm in 21w03a.
Can confirm in 21w05b.
Can confirm in 21w06a.
Video attached.
Can confirm in 21w17a.

Can confirm in 1.17.1.

Can confirm in 21w39a.

Can confirm in 21w40a.

Can confirm in 21w43a.

Can confirm in 21w44a.

Can confirm in 22w05a.

Can confirm in 22w16b
Can confiirm in 1.18.2 and 22w19a.

Affects 1.19-pre3:
[media]

Affects 1.19 as well!
Can confirm in 1.19.2.