I also run Win 7 but I rarely have a CC version of ID fired up. Never seen this particular problem when I have, though. Which patch level are you running?
I trust you'll remember my disappointment with the GUI changes after updating to 11.4, and my rolling back to 11.3.34, which is where I've seen this mostly. BUT, it did occur (once) during the several days I ran with the 11.4 update installed, but I can't say for sure whether it initiated in InDesign or Illustrator (Illustrator is latest patch level, and it is indeed affected).
Remembered that as soon as I pushed the add reply button.
I have only ID installed from the CC collection, and never ran the 11.4 update (I read the forum ) so I'm afraid I can't offer anything insightful beyond I haven't seen it.