If I remember correctly, I used to have a confirmation box when I delete a folder reminding what the folder size is.
Now I only get the delete confirmation prompt without the size.
Information about the size is very useful so that you don’t accidentally delete folders with content files.
You've probably turned off Preferences / File Operations / Progress Indicators / Count files in folders before deleting at some point.
They are set for all local and network files.
I tried on another computer (Windows 7) and the box counts them. But not on Windows 10.
Are the folders in question empty?
No, on the contrary. That’s why I was surprised why I don’t see the full prompt any more.
What does the prompt look like? Can you show us a screenshot?