Redstone, Comparators & Repeaters can't be powered by redstone from above

The Bug
Redstone can't be powered by redstone from above despite other non full blocks (Like Trapdoors) being able to. Also same thing with comparators and repeaters

Replicate

• Create a contraption where redstone is above redstone (refer to the image below)
• Notice that when the top one is powered the bottom one isn't
• Do it with a Trapdoor on the ground
• Notice it does activate