RibbonWindow title not shown in correct position when using SizeToContent

[Cubey2019]

When using SizeToContent="Width" (or WidthAndHeight) the caption in the window title bar can appear offset to the right, in some cases overlapping with the minimise/maximise/close buttons. The problem corrects itself if you manually resize the window (just clicking the resize border is enough).

This is a screenshot of our application's title bar, before & after resize:

I can also reproduce this in the showcase application (committed changes to branch 1d39771) although it's not as obvious:

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Environment

• Fluent.Ribbon v6.0.0 (d58e607)
• Windows 10
• .NET Framework 4.7 (using 4.6.2 build)

[Cubey2019]

@batzen I've just been checking this again and noticed I can still reproduce this issue in the current source, by maximising the window (by dragging the window to the top of the screen, other maximise methods are OK).

If I change RibbonWindow.OnStateChanged to call Measure & Arrange (in the same way as you have in OnLoaded) then it seems to be OK.

[batzen]

Will have a look again then.

[batzen]

Doing that only partially fixes all issues.
When dragging to the side the window is still not resized, but that also does not happen with a regular WPF window...