I have found my event preview images work perfectly now. I’ve had customers complain because the images don’t always show. (Just Bell icon) Hopefully this update permanently fixes it.
I too have seen the reboot issue (normally when entering playback) and lockups when accessing playback via the Hik-connect app. I have encountered this on my own NVR and two of my customers. Rolling back to V3.4.112 on all my customers as default now.