Google analytics - make exceptions by stopping a session?

Question

I use Google Analytics to track user behavior in the application. What am I doing:

• Send the beginning of the session
• Send custom event "Lifetime Launch"
• If there is an error: send a fatal exception
• Submit event "Lifetime stop"
• Send a Stop Session

Now, when I look at the statistics, I see that a certain percentage of users have had an exception in the last 30 days. However , all users had sessions without exception! . This is almost impossible, since I know that there are users where the application crashes every time.

Is it possible that the sender fatal exception ends the session? . Thus, even users in whom the application crashes each time receive a second (short) session containing only the user event "Lifetime stop"? (This explains my statistics)