- Have you experienced this same bug with .NET Framework?:
4.6 Framework
Problem description:
I have created the WPF project. I have added the date picker inside the pop up and added combo box in another popup. I have set popup.staysopen to false for both popup. Now Im clicking the date picker and calendar is opened in outside the window. When I click the date from calendar which is in outside the region(As like below image), the popup closed.

Meanwhile this issue not happens in the combo box.
Expected behavior:
Popup should not closed when focus is in the date picker.
Minimal repro:
Run the sample
Click the Date Picker Button
Select the date as I mentioned in the problem description
Pop will closed.
Please find sample below
Sample.zip
4.6 Framework
Problem description:
I have created the WPF project. I have added the date picker inside the pop up and added combo box in another popup. I have set popup.staysopen to false for both popup. Now Im clicking the date picker and calendar is opened in outside the window. When I click the date from calendar which is in outside the region(As like below image), the popup closed.
Meanwhile this issue not happens in the combo box.
Expected behavior:
Popup should not closed when focus is in the date picker.
Minimal repro:
Run the sample
Click the Date Picker Button
Select the date as I mentioned in the problem description
Pop will closed.
Please find sample below
Sample.zip