Thank you for your post!
I will check into this further, but I don't believe this was ever resolved. I experience this in OS X 10.12.2 as well. I'll post back here later if I find any further information.
Thanks. I hadn't seen it in a very long time and then suddenly this morning it's back.
Yes, it happened to me with 10.12.2 and 15.0.3. Rearranged the size of the script work space and click around in the blank areas and it came back. But a little annoying.
I see it constantly
Same here, alas. All I have to do is hit the tab key on the keyboard and the names reappear.
I've been seeing this for a long time. I don't remember exactly when it appeared but it was long before January 23, 2017 (a week ago).