Can you please update to the latest version of Mojave (10.14.2) and see if issue persists ?
An error occurred while saving the commentAlan Hirshberg commented
I have 2 screens. If I try to drag a window from one to the other Acrobat will crash every time. I would use Preview, but it doesn't show the index down the left side. Running Mojave 10.14.5 on almost new Mac Mini.