Mixer abnormalities

I just started working on a Brahms piano quintet and I stepped away from my computer for around 90 minutes leaving Dorico open with the mixer open. Upon returning, I made some adjustments and hit “play” and noticed there was quite a bit of reverb (I have vienna suite convolution reverb set up and all instruments have a send to it). So, I decided to dial back some send levels but, the sends were disabled (at least they appeared so). Even stranger, there is a signal going to the FX send.

In a nutshell:

  1. Send levels set
  2. Save project
  3. Leave Dorico for 90 minutes
  4. Return to disabled sends
  5. Sends appear disabled but are actually sending a signal.

Is there a logical explanation? Has anyone seen this before?

EDIT. Sorry for the terrible resolution, but the screen is so big, a normal resolution created a 20MB file.

This is clearer:

  1. Be certain send is active
  2. Copy and paste music
  3. Send appears inactive (but it actually sends a signal).