Bin Templates - cannot access

I've recently found that all of the items in the folders for Fusion templates can't be accessed. When I drag an item from any of the templates onto the flow area it won't drop into the flow.
Seems to be the case for both F9 and F16.1.1

Will uninstall all versions and re-install to see if it fixes it - but anyone else had this problem?

No trouble here. What's your operating system? I'm on Windows 10. We just got a report elsewhere about some interface problems specific to MacOS that prevent tab-switching with the expression pick-whip. Could be releated—dragging across UI segments might be an issue.