I saw that one as well as all the others about block breaking reset when you switch item you are holding. I was using a pick so I thought I was experiencing the issue because of server lag between breaking a block and the actual pop. But if it was because I was picking up block entities that makes sense. Thanks.
omg it's over 9000!
I can confirm I have seen this happen as well.
Confirmed for 1.8-pre3.