Can confirm!
This bug seems to be partially fixed (at least from what I can tell).
From what I observed post-fix (25w44a), there still appear to be some translucent artifacts, though the issue is much less noticeable overall. However, expanded faces are still visible (to some extent) on flat sides that “sandwich” the item model, especially if you squint 👀 at an item such as Redstone Dust against a bright background (e.g., the sky, as shown in the attached video).
Can confirm
Can confirm
Confirmed!
Can confirm!