Partially transparent blocks inside sulfur cubes don't render correctly

The bug

Partially transparent blocks do not render properly when inside of a sulfur cube. Only parts of the color show, the rest of the cube looks empty.

How to reproduce

Summon some sulfur cubes with ice, slime, honey, or stained glass inside:

/summon minecraft:sulfur_cube ~ ~ ~ {Size:1,equipment:{body:{id:"ice"}},Passengers:[{id:"sulfur_cube",Size:1,equipment:{body:{id:"slime_block"}},Passengers:[{id:"sulfur_cube",Size:1,equipment:{body:{id:"orange_stained_glass"}}}]}]}

Expected behavior

Should appear inside the cube normally

Observed behavior

Some splotchy color but mostly the cube looks empty

Notes

If you look through the red portion of a stained glass sulfur cube at another sulfur cube, only then will you see the full cube block more or less correctly.