Well, what the title says, really.
If I use the browser attached to an image TV, navigate to a directory, and click on the upload button, then it tries to upload to root, and not the subdirectory. To do it properly, I have to right click on the subdirectory and upload form the context menu.
Yes, I’ve had this trouble as well, and just figured it was a bug.
I do the same as you - right click on the relevant folder, and go from there.
The top button should, in my opinion, upload to the folder that’s selected in the tree, but it doesn’t.