Welcome to the forum! Usually, we recommend to upgrade to the latest version of the firmware since it fixed some bug. You can refer to the release notes in one of the previous postings here.
For end-users, there would be different scenarios in how test they watch. So, it would be possibly be an issue to one end-user; whereas, to another, it's not. However, we do our best to improve the functions and resolve any problems with the watch.