There was also:
1) some "blurriness"/strobing at certain brightness levels, esp. right after coming out of sleep mode
2) a faint black horizontal line starting at the "ellipse" and going the whole way across the screen.
A local repair shop replaced the OLED and an ellipse is still there… approximately the same size, but I did not take a picture with the old OLED in, so I can’t be sure, but I *think* it is slightly lower with the replacement board…?
The Note 9 was dropped several weeks ago and the ellipse showed up shortly thereafter. The front glass was not cracked in any way. There is a tiny, tiny chip near the stylus on the back glass; not sure if that was there before or not.
What are the odds that the replacement OLED was damaged in shipping before it was installed in my Note 9? Is this a known issue, etc.?