I've this problem and I can't find any solution.
I'm used to drag & drop pictures when I have to insert them inline in a mail, or in a FB post or in Twitter.
With Windows 10 I cannot!
AS you can see here, my dragged picture cannot be dropped down in Gmail.
Does anyone have a solution? It's really boring having to push through folders to get the photo instead of drag there in a second.
Thanks in advance