InRibbonGallery: Dynamic ItemWidth / use translated Text in items

[MenzenJ]

I'm trying to achieve an InRibbonGallery where you can select an option and use Icon + Text for those options. I basically convert the Gallery to a list by setting MaxItemsInRow to 1.
It should look like this:

The text of the options is translated, so I do not know the ItemWidth.
The issue is: If the first item of the gallery is not the longest the other items get cut off:

The same is true for the Popup. Even if I resize the popup, the items remain the same fixed size:

The Xaml used for the Screenshots:

<fluent:RibbonGroupBox Header="Actual">
    <fluent:InRibbonGallery Header="Templates" MaxItemsInRow="1" MaxItemsInDropDownRow="1" ResizeMode="Both" Selectable="False">
        <TextBlock Text="Hallo"/>
        <TextBlock Text="Hallo text text"/>
        <TextBlock Text="Hallo text"/>
   </fluent:InRibbonGallery>
</fluent:RibbonGroupBox>
<fluent:RibbonGroupBox Header="Expected">
    <fluent:InRibbonGallery Header="Templates" MaxItemsInRow="1" MaxItemsInDropDownRow="1" ResizeMode="Both" Selectable="False">
        <!-- spaces as workaround -->
        <TextBlock Text="Hallo                "/>
       <TextBlock Text="Hallo text text"/>
       <TextBlock Text="Hallo text"/>
    </fluent:InRibbonGallery>
</fluent:RibbonGroupBox>

I currently use spaces in the first item to fill it up to the longest item's text, which of course is not ideal.
Do you consider this as a use case for the InRibbonGallery or should I use another control to achieve the list with DropDown i.e. a SplitButton or something else?

PS: I thought this was an issue caused by #666

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Environment

• Fluent.Ribbon v7.1.0
• Windows 10
• .NET Framework 4.7.1

[batzen]

I consider this a bug in Fluent.Ribbon. Will investigate.