This is a rather odd issue, but big picture, not a big deal. It does leave me wondering if my FSDBeta performance is degraded at night though, vs. a repeater that doesn't have this issue that looked to me like light bleed, at first.
For my Model 3, it seems to be a time of day dependent, and I'm frankly only now just starting to pay more attention to this, now that I found this thread and see that others have noticed this too. My repeater view can work fine at dusk, but poorly at night, see screenshot and video clips below. At night, it blows out/overexposes in hazy bright orange only the top half of the view, at least for my left repeater anyway. I I'll need to dig into more of my existing footage to find more examples, but I've seen this on my right repeater as well. I've also found footage indicating this happens whether I have FSDBeta engaged or not.
I'll also need to try out on my wife's 2020 Model 3 SR+ repeater camera views, perhaps hers are fine day and night.
Let's start with these two left turns/left blinker in the same car, here's the details:
2018 Tesla Model 3 Long Range Dual Motor (AWD) HW3 with FSDBeta (VIN 119,XXX mfg. Nov'18)
View attachment 755726
Nighttime (top screenshot)
Dec 27 2021 at software 2021.44.25.6
(playback is cued to the right spot, just before the left blinker is turned on)
Dusk (bottom screenshot)
Jan 08 2022 at software 2021.44.25.6
(playback is cued to the right spot, just before the left blinker is turned on)