MAUI Windows Picker scroll bar doesn't appear when there are 14 items

[PandulaASM]

Description

When using the picker module The Maximum capacity a picker can show is 13 items. below are images of 13 Items in a picker.

When the picker item count reaches 14 the scroll bar should be activated it doesn't. below images are with 14 items

How ever when the item count hits 15 the scroll bar is activated. 

Steps to Reproduce

1. Create a Page.
2. Add a Picker and add 14 items
3. The picker doesn't show all items but doesn't show a scroll bar as well.
4. Add another item to the item list.
5. The scroll bar will be visible.

Link to public reproduction project repository

No response

Version with bug

8.0.70 SR7

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

Windows SDK 10.0.1776

Did you find any workaround?

No response

Relevant log output

No response

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[ninachen03]

This issue has been verified using Visual Studio 17.11.0 Preview 3 (8.0.70 & 8.0.3). Can repro it.

[MartyIX]

(@PandulaASM It would be lovely to share your repro sample as text (as opposed to an image). Then it's easy to try with your exact code (perhaps it really matters how exactly it is written).)

[ninachen03]

@MartyIX @PureWeen I created a simple Sample, you just need to add or delete the selection items in MainPage.xaml when verifying.

MauiApp19.zip

[PandulaASM]

Thanks @ninachen03