Bug in renaming Floating window Titlebar

[nandishnan4]

Hello Sergio,

in the Dock Widget example program, once we drag out the docked widgets from the Floating window (technically not floating because it has multiple dock widgets with in), the window title is wrongly updated.
Attached gif is self explanatory.

However this happens only for the first time, then on we get the correct name on the title bar.
Could you please fix this.

Kind Regards
Nandish