P: Drag and drop GPS tagging not working. Right click on map also not working

I cannot geotag photos in the 'Maps' module of Lightroom 8.2. Drag & Drop does nothing, and right click 'set selected photos GPS coordinates' does nothing. There is no error, no message, no metadata is updated at all. 

On initial startup, if I am very quick, I can drag & drop a photo successfully. But ~15 seconds after startup it stops working. 

My issue is identical to those posted here. https://feedback.photoshop.com/photoshop_family/topics/lightroom-8-latest-update-win10-drag-and-drop...

v8.2 seemed to solve the problem for many, but it did not help me. 

I have provided sample photos and logs to Adobe staff already and communicated with them, but as the original thread is now marked 'solved' I have created a new one. 

I have address book enabled. I am on OS Windows 7 Ultimate.