I've tweaked the window in RM (namely sections' width,columns, columns' width) to fit my needs, and whenever I open the app I find it the way I set it. But when I open a new window from the menu, it's set according to the default (that is, I guess, the settings I first tweaked from).
The same thing happens when I create a new folder.
It would make sense to me to have all the windows and folders open reflecting the user's settings and preferences, what do you think?