I used to be able to just drag a token asset from one NPC to another. This was a very big time saver for certain things. Sometimes I like to make slightly homebrewed copies of monster manual entries. I do not know when this stopped working. Anywhere from days to months ago.

It no longer works. No error message. Nothing in the console log. Just behaves as if I did not just drag that picture from one place to the other.

Here is a screenshot for clarity. The arrow indicates left-mouse-click-dragging. the screenshot shows two legacy NPCs, but it does the same thing with 2024 NPCs.
Screenshot 2024-10-12 201958.jpg