Scribus cloud - changing x,y location of properties palettes

[dragonfly]

I am experimenting with Scribus 1.5.4 "in the cloud" using rollapp.com and running Scribus (a free rollapp.com account must first be created for those trying this experiment).

I need to move default locations of popup properties palettes which overlay the Scribus toolbar when popped up. I cannot drag them.

Experimenting with my "real" local desktop Scribus I see that I can move for example text properties box and on closing down Scribus session and restarting, the properties box x,y location is remembered.

Why question is: where are all the properties popup windows x,y attributes saved between Scribus sessions (in Ubuntu)?

They do not appear to be in any files in $HOME/.scribus/ since I have inspected folders/files by data/time accessed.