As Shown in the Pictures redstone can go up the blocks but is unable to go down the blocks this cant be a issue of them being transparent as seen in the pics
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MC-3311 is a very old bug report which is about 1.4 redstone has changed since than
That's true; however, that ticket is still closed as working as intended, and won't be reopened unless Mojang reconsiders. If you'd like to discuss more about this, I would recommend creating a post on the Mojira subreddit.
But MC-214374 wasn't resolved as a duplicate of it
Moss blocks are currently being tracked as MC-214374.
as shown in the slime pic slime blocks are considered TRANSPARENT which means if this was a WAI bug redstone should not have been going down the slime
Duplicate of MC-3311, which is working as intended.