can launch a popup from a button by pressing enter, but can’t exit the popup with just the keyboard. Provide an option to access elements inside the popup content

Implement an API for scaling the content of the Popup control. When scale is set the position of the control based on its target should not be affected. The HorizontalOffset and VerticalOffset should also be preserved. Also, introduce a scale API for all controls that internally are using Popup - like ComboBox, AutoComplete, Pickers etc.

With multiple windows open, showing a popup on a window that is not currently focused will end up showing the popup on the wrong window. 

It would be nice to have more animation styles when the popup opens/closes.  Specifically, it would be nice to have an animation that slides in from a direction (top, bottom, right, left).  I would like to have a popup that appears to slide up from the bottom of the page when it opens and slides down when closing.  I know you can get a similar effect with the SideDrawer control but would prefer to use the popup.

The issue can be reproduced with ComboBox, AutoComplete or Pickers - when placed inside a Popup, the dropdown is not positioned at the expected position.

If you have a modal Popup and update its PlacementTarget after IsModal is set, the Popup will not be shown correctly on Windows.

Provide a way to blur the background of the popup, so that the user cannot see through it.

The Popup is not correctly positioned on Windows when changing the size of the window by Minimize/Maximize. 

When having a popup with a content template set and adding items in the popup, the size of the popup does not change dynamically. 

When ContentTemplate is not used, the size changes dynamically. 

Currently when the user taps outside the non-modal popup, the popup is dismissed. We'd need to provide a way to set focus to input fields in the page without removing/closing the popup.

When the Popup control is attached to the page, the "Top" and "Bottom" options of the Placement property does not respect correctly.

When popup is opened and from it navigate to a new page, the popup does not close and stays open on the new page. 

The Loaded event of the Content and the Loaded events of the views inside the Content are not raised when the popup is shown.

If I double click on Button (popup is attached to this button and opens on a button click) ->  in macOS, iOS, Android, the Popup opens and then closes. While in Windows, the Popup is still open.

Popup's size must be able to dynamically expand/shrink when the content's size changes. 

When opening a modal page when using Shell.Current.PushModalAsync, on iPad the popup inside this page is not centered, partially cut or not visible at all. It works on Android, iPhone, MacCatalyst and WinUI.

When adding for examples, ComboBox/AutoComplete, Pickers inside RadPopup and open the pickers/combo dropdown. Then close the RadPopup, the popup of the pickers/combo/autocomplete stays open. The behavior occurs on iOS, MacCatalyst and WinUI. On Android exception is thrown.

Popup:

Calling

IsOpen = true,
IsOpen = false,
IsOpen = true,
IsOpen = false,

while the last IsOpen update isn't ready, kills the Popup.
It works async, even if animations are set to none/0s and there is no public event to validate the last update is fully done (Popup opened/closed)

In my case i have a popup opened, while a search operation is running in the background.
If this background search returns too fast and i set IsOpen to false, the update is ignored and the popup keeps in an opened state.

When the Popup is used with asynchronous operation in the OnAppearing method the application crashes when started.

Popup has incorrect position on iOS, Android devices are rotated 

Popup has incorrect position on Windows when window is resized.

Check Telerik .NET MAUI Controls Sample app -> Popup Example on windows resize the window the popup is not centered, it changes its position. 

on android, iOS rotate the device landscape, popup does not expand to cover the screen area.