It appears the top row are only secured by “push-fit” retention.
A light downward knock on a jack plug inserted to the top row of sockets may be enough to detach the socket from its mount.
I have experienced this recently and should it happen in a live situation it could be a major issue. Can be fixed with superglue but be better if sockets were mounted to chassis or better retained.
Hi this issue got resolved by using different Jack sockets.
To be honest I haven’t heard any user with broken jack connector, I’m pretty sure the device is robust enough.