Grant Fritchey (8/29/2016)
Make sure you're up to date on service packs and cumulative updates. It's pretty unlikely such a fundamental bug is unaddressed by Microsoft. There's be a lot more yelling and screaming if lots of people were experiencing random errors with IDENTITY values.
Yes, this was my first opinion too. But the log prove that.
I have looked all CU, SP release notes, but nothing about identity is reported.