Note the missing Image panel where you Choose or Clear the image. This happened while working with Microblog to document something, and I was trying to put a different image into the Top Menus for Light and Dark mode. At first, Elements wouldn’t respect different Light/Dark mode images, then I got this.
Update: I deleted the Image Component in question, created a new one, and things are back to normal. However, this does seem like I triggered a bug at some point in the original process of trying to apply Light/Dark styles.
Also seeing this in 2.0.01:
Clicking on either alters both.