As a workaround, I noticed there was a "Open in config menu" or something like that if you right clicked a object.

Also notice this, the config viewer is a work around but lets try for less mouse clicks.

While on the subject of classes and menus I think marker classnames should also be visible in marker menu.

Added in the next dev branch update.

It's not attributes window anymore. Instead, I've added new context menu option "Log Classes to Clipboard", you can find it in the "Log..." section. Together with it, I've also added option to log position under cursor.