CPU Compare shows incorrect 'new time'

[beirtipol]

Running 2013 build 13088 64bit

I've got 2 CPU snapshots. The 'old' cpu call tree shows a time of 4,751,248. The 'new' cpu call tree shows a time of 4,278,162. This is what I'm expecting to see.

So why when I use 'compare with snapshot..' does it show me:

Old Time: 4,751,248
New Time: 6,855,481

I thought it may be something to do with new methods I had introduced in the code, so I ran a profile of exactly the same code twice, generating a time very similar to the 'new' time above. However, when I compare these 2 snapshots, there is an extra 2,000,000 ms added on to the 'new' time. It doesn't seem to matter which order I compare old to new.

[beirtipol]

I downloaded the 2015 version and grabbed an evaluation key and found that this bug doesn't occur. Seems like I'm stuck then..