How To Manage the Featured Image?

I'm exploring the Status plugin, as my users seem interested in this capability. However, in testing I came across a problem with the featured image. Once a featured image gets downloaded, it seems to get stuck and is applied to all other posts that don't pull a featured image. Screenshot it attached.

I know I can disable that media download function, and perhaps I will, but before I do, I'd like to see why it isn't working and how it can get back on track.