Hi,
See the screenshot at the link below. This is happening periodically during Chorus and Scripture slides when I hover over the timeline view of the lyrics.
You'll see the large preview thumbnail shows up on the "On Air" screen instead of above the timeline.
I'm running 1.28.0.0774 and know there are fixes available via an update but I am not applying them in between services. I'll report back if updating it does fix the issue or if it persists after the updates.
https://www.dropbox.com/s/1xn12dmg7uuvzzb/IMG_2377.JPG?dl=0
Kevin