Hi,
After reading this post I checked mine, new only a couple of weeks ago, it too has a line from the bubble to the top only visible at certain angles. I'm pretty sure it's not a crack or scratch, looks like it's "in" the plastic of the cover "glass", I think it's just a moulding stress mark - doesn't bother me as it's not at all obvious, even when not using the
Suunto face protector!.
Chris