Submenu contained in DropDownButton closes too slow

[stylefish]

If you create a structure like this:

<fluent:RibbonTabItem Header="Home">
    <fluent:RibbonGroupBox Header="Group">
        <fluent:DropDownButton Header="Button">
            <fluent:MenuItem Header="Sub 1">
                <fluent:MenuItem Header="Sub 1.1" />

and hover the the "Sub 1" item a menu opens, this menu closes too slow, when you add 2 subitems (Sub 1, Sub 2) the menus are overlapping each other on mouse hovering.

repro demo proj attached:
WpfApp1.zip

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Environment

• Fluent.Ribbon v7.0.0-alpha0388
• Windows 10
• .NET Framework 4.7.1

[stylefish]

@batzen would be nice if you could release a new preview on nuget these days :) thank you!

[batzen]

Yeah, had no time to do so during the last two weekends.
Will publish now.
https://www.nuget.org/packages/Fluent.Ribbon/7.0.0-alpha0419