If you place an editable ComboBox in a TabView, its DropDown will not close when switching tabs. Just click into the ComboBox input to select an item and navigate to a different tab - the options list stays open.

When the ComboBox is placed inside a modal popup, the dropdown can't be closed on WinUI when clicking outside.

Whenever the combobox doesn't have enough space to be displayed on the screen, the footer gets pushed to the bottom and off the dropdown popup.

This was tested on Telerik 3.0 but I also tested it on 3.1, 3.2, 3.2.1, and 4.0 with the same results. 

TapGestureRecognizer not working for RadComboBoxItem on the Android platform.

When you add Telerik .NET MAUI controls that use icons, such as ComboBox, AutoComplete, etc, there are font-related exceptions in the output.

Although the exceptions do not affect the behavior and appearance of the controls, they make the output hard to read.

If a "long" placeholder value is set when the user selects a few of the items from the multi-select combobox and taps off of the combobox, the combobox is left displaying extra whitespace below.