Regular vines can generate floating inside of trial chambers when the trial chamber is in a lush cave.
A fix to MC-266625 would probably fix this as well, but personally I think lush cave decorations and sculk and such are cool things to encounter when exploring a structure so I wouldn't mind if that gets marked as intended. Floating vines, on the other hand, are clearly not intended.
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is duplicated by 5
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Can confirm in 1.21.8. Vine growth sideways still happens mid-air occasionally. (Find one of said locations and wait. Re-create world with same seed if necessary.
Found in seed -4158363540366140846 locations 210 -35 -459 and 220 -30 -457 .
Still in 24w18a.
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/tp 273 -8 143