I have set the live view to auto, i.e., to automatically switch from the screen to the EVF (when you put the camera to your face to look through the EVF) and back from the EVF to the screen (when you take the camera away from the face). Initially, I had the issue that the camera did not detect when I looked through the EVF. I thought it could be a bad contact between the EVF and the camera because it worked when I wiped the contacts of the camera and the EVF.
But since yesterday I have the opposite. If I switch on live view, it shows on the screen. When I look through the EVF, it switches to the EVF. So far so good. But when I no longer look through the EVF, the live view image stays in the EVF and does not appear on the screen, Sometimes, after 10-15 seconds, live view switches back to the screen.
Problem persisted after battery change, camera reset, and indeed firmware update.
BTW, it did the same with automatic review and playing images, which was really annoying. After I took a shot with the EVF, the photo showed in the EVF for review; same when I then pushed play. I "solved" that by setting review and play to screen and not to automatic.
Any thoughts appreciated.