If that behaviour occurs again, could I kindly ask you to raise a support ticket for this with Just Flight Support at the following link: https://www.justflight.com/support
The F70 & F100 Professional are complex products, so in order to give our support team the best chance at offering speedy assistance, could you please include any screenshots/videos of the behaviour with your ticket, as well as attaching the log file generated by the product.
Instructions for locating the log file can be found here: https://support.justflight.com/en/support/solutions/articles/17000152594-where-to-find-the-log-file-s-
Mark - Just Flight