TimePicker and DatePicker unreasonable positioning

[HO-COOH]

Describe the bug

TimePicker and DatePicker will show at an unreasonable position when there is not enough screen space downwards.

Steps to reproduce the bug

1. Open WinUI3 Gallery, move the window near the bottom of the screen.
2. Open a TimePicker/DatePicker, see the wired position

Expected behavior

No response

Screenshots

I only recorded DatePicker. TimePicker has the exact same issue.

2024-06-14.00-13-59.mp4

NuGet package version

WinUI 3 - Windows App SDK 1.5.4: 1.5.240607001

Windows version

Windows 10 (1809): Build 17763

Additional context

No response

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one. Thank you!

Open similar issues:

• TimePicker popup offset too large! (#9202), similarity score: 0.83
• Inconsistent control height and spacing between the control and its Header for TimePicker and CalendarDatePicker (#8950), similarity score: 0.74
• [TimePicker][DatePicker] Oddly shaped shading effect between selection dates (#9028), similarity score: 0.73

Closed similar issues:

• DatePicker in Viewbox: the picker flyout could appear offscreen (#4968), similarity score: 0.74
• The WinUI3 popup element can not exceed the parent window area！ (#7933), similarity score: 0.71

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[carldebilly]

I confirm it's similar to the bug #4968 that I reported 3 years ago and I even found the source of the bug.