LR zooms into file when playing a video

[expee]

Hi,

This relates to video files in LR classic. LR zooms into the file when playing files shot on GH5 and settings shown below, effectively showing only the center of the frame. When paused or stopped, it shows the whole frame. See samples below. As a side note, it shows the whole frame when playing a slow-motion file (180fps) in 1080p.

Additionally, it shows the whole frame shot on GH5 in 4K. Any ideas why this is happening?

Thanks a lot!

Camera: Panasonic GH5

Settings: 1080p / 23.987fps / CinelikeD

[expee]

So after 9 months this still remains a mystery. It appears that it has nothing to do with the resolution but rather with bit depth. All 8-bit files that I've tried already play fine. It's only with 10-bit files that LR will zoom in and show a portion of the frame. Any ideas why this is happening?

Thanks!

***In case it matters, I'm running the latest LR Classic on the top model of 5K iMac 2017.