Comment 8 for bug 1236257

Tested again on Crunchbang Waldorf, Inkscape trunk revision 12923.
Not reproduced when loading the default template (x)or opening a template with file open.
Reproduced with the file #1.

Also reproduced with the following steps (but it might be indirectly related only):
1. Open the default template (doc1) and follow the instructions from the initial description.
2. Keep the document properties dialog open and open a new default template (doc2) with the File>New>Default menu.
3. Draw another rectangle in the new template. Note that the document unit is in px in the selector control bar and in mm in the Document Properties dialog.
4. Change the unit to cm in the Document Properties dialog -> both the rectangles in doc1 and doc2 are resized. Additional, the doc2 name is changed to doc1 in the title bar.
I only happens with a floating dialog (runs fine with a docked one).