Since these are an identical substance, culling would be expected.
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Can confirm in 21w03a.
Can confirm in 21w05b.
Can confirm in 21w06a.
Can confirm in 21w10a. Video attached.
Can confirm in 21w13a.
Can confirm in 21w14a.
Can confirm in 1.17.
Can confirm in 1.18.1.
Can confirm in 1.18.2.
Can confirm in 1.19.
Can confirm in 1.19.2.
Can confirm.