Well, I did expect that the redstone wouldn't turn on when I placed under a detector rail. There are no other power sources around, I've checked.
What actually happened was that the redstone did get activated.
Steps to Reproduce:
1. Place down a detector rail, in any direction.
2. Dig a hole under it.
3. Place a redstone dust there.
Related issues
Attachments
Comments

This does the same thing apparently...
Duplicate of MC-5788 , please use the search function to see if your bug has already been submitted. Currently over 40% of tickets are being closed as duplicate.

VOTE THE ORIGINAL ONE UP SO THEY IT TAKES PRIORITY!