Two or more item stacked on top of each other don’t glow blue. This is a bug what I have encountered in past experimentals and in 0.9 Stable.
- What is the container tile it’s on? Locker, counter, table, etc?
- Is there enough light?
[quote=“FunsizeNinja123, post:2, topic:6128”]1. What is the container tile it’s on? Locker, counter, table, etc?
2. Is there enough light?[/quote]1. anywhere, including the ground.
2. you mean the blue glow is light based now!?
Yes.
Nope, doesn’t seem to make a difference.
Or you need to be close.
Same.
Still not fixed as of 1495/b51338c. 
This happens to me too from time to time. I’m still trying to figure out the circumstances involved, bit I think it happens regardless of container (it happens to all stacks in sight monster what that are in or not). Actually, I know it happens to item piles from dead zombies, so it happens on open ground, and I’m pretty sure it’s happened at all times of day.
It’s fixed, Thanks!