Today me and zerg went through some measures to prevent xraying, well, what does this mean for you if you don't xray? Really... nothing. There's a few things that have changed.
We've taken a more 'orebufusicator' type approach when improving this, so therefore, it's going to be really hard for you to xray now.
- Can you tell which ore is real?
Now, you may notice after you break a stone you'll immediately see diamond/gold/coal/etc then it will go away, this is a result of this, but once you start mining, it shouldn't happen anymore.
This is all I have to say, so if you're wondering why it does that. That's why.