Comment 13 for bug 116443

I think the problem here is that the "Browse" file chooser (reached via clicking "Browse" in the "Browse Icons" dialog) violates the principle of least surprise and is badly counterintuitive.

You are expected to choose a folder, not a file. No regular files are listed at any time, so you can't see whether there are files in the folders or not. When you want to choose a file, you have to navigate to the folder one level up (i.e. closer to the root) from the folder that contains the icon you want to use, select the folder containing the icon you want to use from the list, then click "Open" to dismiss the "Browse" dialog and cause the "Browse Icons" parent dialog to MAYBE populate its main pane with thumbnails from the selected folder (IF there are any image files in it), from which an icon can be chosen.

This is not "browsing", since it expects clairvoyance on the part of the user: both in divining what the hell is going on and in knowing, presumably by osmosis, that a particular folder actually contains icons without being allowed to see its contents.

A workaround might be to relabel the button and associated dialog "Fumble Blindfold" rather than "Browse".