So I took my suunto MB6 to ski the first time, for clinometer really since I wear a suunto core. It developed bubble in subzero temp, and I thought okay, liquid contract so it's unavoidable. But now it's back to room temperature, and the bubble is still there.

So what's the deal here, was the capsul not sealed and air got in? The bubble isn't large enough to affect needle. Is there anything to worry about or is it normal?