The problem is that when dragging a photo from the filmstrip to the map nothing happens (no photo on the map, no gps coordinates in the metadata).
The same applies when selecting and trying to place multiple photos.
I have in the mean time downgraded to version 7.4 and the map module appears to work correctly again.
Please take a look at this discussion Lightroom Classic: Placing photos on Map module erratic and slow since update LR Classic CC 7.5 (Windows) | Photoshop Fa… as we have been reported that this functionality is not working as expected since the latest update.
Feel free to add you vote to the above discussion and share your feedback as this forum is monitored by our Engineering team and your feedback will help them in tracking and reproducing the issue.