I'm using the FloatableWindow in a control where the root control is a Grid and not a canvas. To show the window, I set the windows's Grid.Row/Column/RowSpan/ColumnSpan properties and once I do so, the window appears in the position I want it to (if I don't
set the properties, it appears way above and the title bar is off the screen at the top). What I've noticed though, is that when I invoke window.Show(), there is a slight flicker on the screen before it shows up in the right spot and with ther ight size. I'm
using the ExpressionDarkTheme - is it possible that the flicker is due to the theme? If I open the window in Modal mode, I don't see this flicker.