When a minecart is put on rails in water, flowing out, the minecart will automatically move towards the south or east, depending one the way the rail is aligned.
Steps to Reproduce:
Recreate:
[media]
Place a minecart on the middle rail
Expected Result:
The minecart would not be biased in its movement to a specific direction.
Observed Behavior:
Depending on the direction you reproduce it in, minecart will always move towards the south or east direction.
Screenshots/Videos:
[media][media]
Linked issues
relates to
Attachments
Comments

Can confirm in 20w51a.
Can confirm in 21w03a.
Can confirm in 21w05b.
@unknown, this has confirmed to be a bug by Mojang themselves, as this ticket has an assigned, "Mojang Priority".

Affects 21w18a

Affects 1.17

Isn't this a duplicate of MC-9551?

Affects 21w40a
Can confirm in 1.19.2.
[media]
Can confirm