InRibbonGallery when loaded, mouse wheel up or down cause crash.

[Yumeryu]

I have a InRibbonGallery with a lot of data inside, when loaded, before clicking any up, down or expand button, using mouse wheel up or down cause crash, with error index out of range.

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Environment

• Fluent.Ribbon _v5.0.0_dev0477
• Theme generic (not needed in version 5.0 and upwards)
• Windows 10
• .NET Framework 4.5.2

[batzen]

Some details would be nice.
Including a StackTrace, amount of data and property values on the InRibbonGallery.
The best would probably be a repro.

[Yumeryu]

I do apologize, a bit of quick trigger there.

I actually did spend a bit more time on it. Switch off "Only My Code". And I found the issue.

In file RibbonTabControl.cs

From Line 563:
if (selectedIndex < visualItems.Count - 1)
{
visualItems[selectedIndex].IsSelected = false;
selectedIndex++;
visualItems[selectedIndex].IsSelected = true;
}

I believe that should be:
if (selectedIndex >= 0 && selectedIndex < visualItems.Count - 1)
{
visualItems[selectedIndex].IsSelected = false;
selectedIndex++;
visualItems[selectedIndex].IsSelected = true;
}