Thanks for your continued help, @Aurelien . Here are the screenshots you asked for:
It occurred to me that you might appreciate screenshots of the view’s settings as well, so I began to take those screenshots. While doing so I noticed that the action was missing in the view’s settings (AppSheet’s auto-assign feature did not add the problem action to the view, so I added it manually and added the others that displayed properly as well to be safe.
For sure your help got me pointed in the right direction, for which I’m most grateful. My issue is now resolved! 
Thanks!