1. Open Structured Keyword Panel for a thumbnail selection
2. Add keywords to the image
3. Close the Structured Keyword Panel
4. Open the Metadata Info (button in lower left corner of thumbnail of selected image)
5. Add or change any entry category.
6. Close
7. Return to Structured Keyword Panel
8. Keywords in this panel are now missing
9. Close, then shut down PM6
10. Reopen PM6 and return to the Structured Keyword Panel with same thumbnail selected
11. Keywords are back.
Screengrab of empty panel attached
Mojave 10.14.3
iMac 5k, 2017
4.2 GHz Intel Core i7
Memory 32 GB
Radeon Pro 580 8192 MB
Bob