Invoicing Logged time glitch in the software?

Since the new features were added (which I love, btw), I’ve been having an issue with consistency regarding dates of service. 

1. I have a client session and record it in the time tracker.
2. When I go to create the invoice, the date of service is off by one day. It used to be 100% of the dates were off by a day. Now it is about 10%. It creates an extra step of having to go back into my own calendar log to clarify, taking up time. 

Is this a glitch? Is it user error? How do I fix this?

Thank you! 

Christina