Completed
Last Updated: 20 Jan 2020 12:06 by ADMIN
Release R1 2020 SP1 (LIB 2020_1_120)
See attached.
Completed
Last Updated: 17 Feb 2020 11:47 by ADMIN
Release R1 2020 SP1

Please refer to the attached sample project and gif file which illustrates the exact steps and obtained result.

Workaround: set the DropDownStyle property to DropDown.

NOTE: Shift+Tab should also navigate through the controls in a reversed order with enabled AutoCompleteMode.

Completed
Last Updated: 21 Jul 2020 12:19 by ADMIN
Release R3 2020 (LIB 2020.2.727)
Create a RadForm application project.
On the form place a radPopupEditor.
Place a radPopupContainer on the form.
Place a multiline radTextBox on the radPopupContainer.
Set radPopupEditor1.Visible = false in the RadForm's constructor.
When you run, the editor is not visible, but the radPopupContainer is visible.

If you skip step 5, the editor is visible and the container is not visible until you click on the editor...as it should be.

If you have a program that later makes the editor visible, when you click the editor, the container will move from it's original location to under the editor.  Clicking the editor again hides the container, and the visibility of both seem to work correctly after that point.
Completed
Last Updated: 02 Nov 2020 09:06 by ADMIN
Release R1 2021 (LIB 2020.3.1102)
Going through the Event Viewer I found this:

Application: TestApplication.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.IndexOutOfRangeException at Telerik.WinControls.UI.RadPopupContainerForm.OnKeyDown(System.Windows.Forms.Keys) at Telerik.WinControls.UI.PopupManager.OnKeyDown(System.Windows.Forms.Message ByRef) at Telerik.WinControls.UI.PopupManager.Telerik.WinControls.IMessageListener.PreviewMessage(System.Windows.Forms.Message ByRef) at Telerik.WinControls.RadMessageFilter.NotifyGetMessageEvent(System.Windows.Forms.Message ByRef) at Telerik.WinControls.RadMessageFilter.GetMessageHookProc(Int32, IntPtr, IntPtr)