Still happens in v1.21.8, and I noticed that some other blocks do the same thing when being loaded from a Structure Block manually (not via redstone), being: powered rail, detector rail, activator rail, and also carpet (but only if 2 are touching, even if different colors), and also leaf litter.
Blocks seemingly NOT affected are comparator, repeater, sign, (regular) rail, lightning/end rod, pressure plate, button, fence/gate, door/trapdoor, string, torch (regular/soul/redstone), candle, twisting vines, daylight detector, creeper head, conduit, scaffolding, lantern (regular/soul), cobweb. That's all I felt like testing.
I think the migrated comment above from 13/Oct/20 6:17 PM has a good point, so maybe Structure Blocks need to be loaded in 2 “layers”, being solid blocks first, then ones that require supports (i.e.: something underneath). Just my opinion. It’s weird though, because having other blocks, like bricks underneath doesn’t cause the issue, only certain function blocks, like hoppers, command blocks, etc.
Jeffrey Thayer
Still happens in v1.21.8, and I noticed that some other blocks do the same thing when being loaded from a Structure Block manually (not via redstone), being: powered rail, detector rail, activator rail, and also carpet (but only if 2 are touching, even if different colors), and also leaf litter.
Blocks seemingly NOT affected are comparator, repeater, sign, (regular) rail, lightning/end rod, pressure plate, button, fence/gate, door/trapdoor, string, torch (regular/soul/redstone), candle, twisting vines, daylight detector, creeper head, conduit, scaffolding, lantern (regular/soul), cobweb. That's all I felt like testing.
I think the migrated comment above from 13/Oct/20 6:17 PM has a good point, so maybe Structure Blocks need to be loaded in 2 “layers”, being solid blocks first, then ones that require supports (i.e.: something underneath). Just my opinion. It’s weird though, because having other blocks, like bricks underneath doesn’t cause the issue, only certain function blocks, like hoppers, command blocks, etc.