Relates to 1.5 "Redstone Update"
http://www.youtube.com/watch?v=nfBVAexor3s (From 0:40 onward. If the video does not work, an attachment has been added to counter such removal.)
The attachment's "Sandstone" slabs are powered from a redstone torch underneath the stone block. Redstone torches cannot power half slabs.
What I expected to happen was...:
Half-slabs not carring signals via upward staggered placement (Shown in picture.)
What actually happened was...:
Instead, the redstone current is sent up the staggered placement of half-slabs.
Steps to Reproduce:
1. Look at attached image or see linked video above starting from 0:40
Linked issues
is duplicated by 5
MC-9007
Redstone Signals can only travel flat and diagonally upwards between slabs, not down.
Resolved
MC-152968
redstone signal not running down the sides of non-solid blocks
Resolved
MC-187836
Redstone goes above slabs
Resolved
MC-238597
Redstone and slabs are weird
Resolved
MC-278492
Redstone ladders not working down
Resolved
relates to 2
Attachments
Comments 15
This is not a bug, but a feature request, and should be posted on the MC forums here.
This behaviour follows directly with redstone logic (see minecraft wiki here. Because the block is opaque, redstone current will travel up (but not down) half-slabs.
@unknown That doesn't explain why it connects logically (not visually, at least not fully) at all. It should either not connect and not transmit power or connect and transmit power in both directions.
Hmm, yeah that doesn't make much sense. Now that you can place redstone on glass, the issue is even more apparent there. The wire shows as connected (even up the side of the glass) but redstone current can only be sent up. Feel free to review.
I'm not the one who resolved it and it was resolved many years ago, so I'm not going to reopen it. Mojang can certainly review this bug if they want.
This issue ticket is not very clear. Please follow this as a guidline.