When placing controls in the CellTemplate/CellEditTemplate in the RadMultiColumnComboBox`s dropdown`s GridView some do not receive/accept the mouse input correctly.
In the newest version (2021.2.615) the dropdown of a RadDatePicker does not open. A RadButton works fine and a RadComboBox open and can select an item via mouse click.
In a previous version (2021.1.325) the RadComboBox also does not work, this seems to be fixed already.
I have attached a sample project demonstrating the behavio:
1) start the project
2) open the dropdown of the RadMultiColumnComboBox
3) click on the RadDatePicker`s calender icon button. => the calender view does not open
The very same DataTemplate is applied obove the RadMultiColumnComboBox to illustrate the proper behavior in contrast.
The behavior is visually demonstrated in the .gif (1.gif and 2.gif) I have attached.