I have modified 20+ shortcut keyins using the QGIS 2.18 Settings > Configure Shortcuts dialog. I save them to an XML file using the Save... button, and the XML file that is generated looks fine (that is, all the modified keyins are displayed).
However, when I load and configure another PC with QGIS 2.18.4, the shortcuts XML I have generated doesn't load on this PC. I click on the Load... button and specify the modified shortcuts XML file, but no changes at all appear in the shortcuts list.
For that matter, I can remove shortcuts for several functions on the originating 2.18 PC, but attempting to reload the saved shortcuts XML file has no effect on this system either. Is anyone else experiencing this problem?