@user_746623229407444_746623229407444 I am having the same issue with my RLN8-410 and the new firmware V3.4.0.304_24031817. My cameras are the Trackmix Wifi and I am connected directly to the NVR. I have had to revert back to the previous firmware V3.3.0.226_23031632 to restore the live zoom function.
I hope they can find their mistake and correct it with a new updated firmware version.

@joseph_1979 I did that and they finally discovered that the team that creates the updates had indeed removed the manual zoom function that was on the menu bar and replaced it with zoom using the scroll on the mouse. They just didn't bother to tell anyone about it.

@user_746623229407444_746623229407444 I am having the same issue with my RLN8-410 and the new firmware V3.4.0.304_24031817. My cameras are the Trackmix Wifi and I am connected directly to the NVR. I have had to revert back to the previous firmware V3.3.0.226_23031632 to restore the live zoom function.
I hope they can find their mistake and correct it with a new updated firmware version.