Ribbon controls disappear when ribbon is initially disabled

[znakeeye]

Place your issue description here.
Update Showcase sample with the following. (In my case I have bound "IsEnabled" to a viewmodel property which is initially false.)

<Fluent:Ribbon x:Name="ribbon" IsMinimized="False" IsEnabled="False">

The ribbon controls are gone until you select a tab! One possible fix (or at least it decreases the probability of this error) seems to be a binding of the SelectedTabIndex property:

SelectedTabIndex="{Binding SelectedTabIndex}"

I can confirm that I have previously seen a similar issue with the WPF TabControl. For me, binding the selected tab index has fixed weird tab selection bugs in the past.

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Environment

• Fluent.Ribbon v6.0.0-dev0171
• Windows 10
• .NET Framework 4.5.1