[Framers] Docking the Book window

[Doug]

When I start Frame and open a Book file, the Book window displays
docked in the upper left corner, as usual.  I can drag it down to make
it float, but nothing I do will re-dock it where it was originally.
This means the Book window gets obscured if a Maximize or Consolidate
a document window.

The only way I can reset this is to close Frame and restart it.

Is there a way I'm missing?  Even the Reset Workspace command is of no help.

Thanks,

Doug