1px horizontal black line at top of Studio & Micro Studio's

I recently updated multiple Blackmagic Studio Camera 4K Pro G2's and Micro Studio Camera 4K G2's to the latest firmware. Have noticed since the update that all camera's are now showing a 1px horizontal black line at the top of the shot on both the HDMI and SDI output. It's almost unnoticeable to see, but it's there, and it's on every camera (over 15 of them). Worth noting that I've both the stable 8.5.1 release and 8.7 Beta firmware. Both produce the same results. I have also not a pixel recalibration on all cameras. The issue remains. From what I can tell, this looks to be a wider firmware issue.

Steps to reproduce the issue:
- Camera is set to output a 1080p clean feed via either HDMI or SDI
- Camera plugged directly into recording device. Have used a variety of recording devices including ATEM Mini's, ATEM SDI's, Video Assist's, Hyperdeck etc. Also tried recording in different codecs. All provide same issue.
- Take the recorded file and bring into DaVinci. To make the issue easier to see I put a white colour block on my timeline and then place the footage on top and move the footage down slightly. You'll then see the top of the footage has a 1px width horizontal black bar. See attached image below.

Anyone else seeing this issue? Like I say, it's hard to spot, but once you know it's there, you can't un-see it!