[Steinway]

While trying to write some annotations today, the screen started zooming in and out as soon as I got near with the S-pen. I was a bit confused about this, until I discovered the screen reacted to my wedding ring as if it were my finger tip. That is, touching the screen with the S-pen and (accidentally) my wedding ring at the same time, the tablet thought I was using two fingers. Thinking about the black screen problem, and the fact that it only seems to occur when touching the screen to turn (not when using pedals), I wondered if this could maybe have anything to do with it? Maybe if I touch the screen to turn a page, and my wedding ring is too close to the screen, MSP starts pinch zooming at the same time as turning the page, which somehow results in a black screen?
Could this be a plausible explanation somehow?