Put the summary of the bug you're having here
What I expected to happen was...:
the redstone would light up
What actually happened was...:
it stayed unpowered
Steps to Reproduce:
1. Place a redstone dust
2. place a stair on top of the redstone dust
3. place a lever on the tall side of the stair and turn it on (or button)
Hi there!
This looks like a duplicate of MC-7335. This is an intentional feature, and you shouldn't expect it to be patched as a bug. You can suggest a change to this on the feedback website at https://feedback.minecraft.net/hc/en-us.