For me (along with some others), only the screen was replaced, so the PCB itself was not changed but replacing the screen has resolved the issue.
Also, all of us have started to experience the very same symptoms at the very same position and very same kind of ghost touches.
My ghost touches became better when I have pressed the bottom left or maybe bottom right corner in portrait orientation.
However, what you write sounds interesting...
...somewhere it seems to be caused by a connection or breakage issue, which may be even at the flex cable, the connector, or the display itse