Current Folder Count Wrong or Missing

I've been seeing an issue on LrC 12.3 on Mac where the folder that is currently being imported isn't updating at all or the count is incorrect. The Previous Import folder at the top is correct.

In the screenshot, I've already imported from two cameras and have 211 images in that folder (ie. 170 of 211 in the filmstrip). However, when you look in the folder under collections side bar, it is only saying there is 1 image in that folder. So there is a discrepancy with the count displayed in the two different places. 

Previously, and probably more often,  I've had the situation where I had imported from a card and am happily working away with the filmstrip to discover that there is no new collection folder with the current date. So I might navigate to a different folder and then can't come back to the most recent folder because it isn't there. So the folders aren't being updated.

Quitting and restarting LrC works. So there is an occasional bug where the folder collections are not being refreshed properly.