Flint - OpenVPN client not working on 4.5.16

On < 4.5.0 OpenVPN client stucks at initiating a TLS connection. I downgraded to 4.4.6 (I was on 4.5.16 and downgraded to 4.5.0) to rule out the possibility of the firmware upgrade being the reason, and indeed it seems is, which is weird.

Not sure if anyone else has the same problem. I have all sort of problems in > 4.4.6 on all my devices.