Alexander, I don't believe you're imagining things!
Like yourself, I'm oftentimes finding the EVF eyesight adjustment has changed (so then you have to go through the nuisance of re-calibrating it to your shooting eye, which for me is the left one) although the camera has just been sitting in the bottom of my backpack; I reckon it must be from putting other objects into and out, even though I never leave anything resting atop my camera in there. The other phenomenal adjustment (that was a play on words really) that occurs is when the exposure compensation dial moves from its normal 0 position. Both of these could have been prevented if the camera had been built with similar locks for these dials as are found on the other top dials.
Can't comment usefully on the electronic/mechanical shutter issue though ... I might speculate that you've pushed the trigger inadvertently while the lens cap was on, but honestly my comprehension of how and when the camera would switch to one or the other is very limited. Hope this helps some, Paul
