Sony A7 IV vertical color artifact

I shot some test video outdoors. While editing the footage at home today I noticed one of the footages (maybe more) has a weird color artifacts very noticeable on the tree bark.

It has been shot in 4K 30p, Slog 3 10bit 4:2:2 300Mbps All-I codec using Sony A7 IV. My computer or editing software has nothing to do with it, I checked the raw video and it is there (albeit less obvious due to log).

Does this mean my camera is broken? Why do you think this happens?