The bug
If you go to spectator mode and look underneath a minecart, you can see brownish textures which were used back in alpha, when minecarts were used for storage.
Attachments
Comments 18
Relates to MC-108636
Can confirm in 20w48a.
Still confirm 20w49a.
(NOTE: Notch is not removing this. which it meant to place item on minecart like, cave and cliffs mentions because how storage on minecart when you place gold and iron stack was it? If you want to get rid of it, delete the stacked texture right above the middle)
Can confirm in 20w51a.
Can confirm in 21w03a.
Affects 21w05b
Can confirm in 21w06a.
Affects 21w11a
Affects 21w13a
It's always been in the game, it's a known thing and suddenly it should be removed? It can't hurt you and it's nice look into history.
Affects 21w16a
Affects 1.17 Pre-release 1
Affects 1.17
Can confirm in 1.17.1.
Affects 21w39a
Can confirm in 21w40a.
[media]Fixed in 1.18 Pre-release 2
Felix Jones
Can confirm.