On all the demos, when I select an option, the entire list continues to display. Use this as an example:
https://select2.org/getting-started/basic-usage
I expect only the selected option to display.
I tried clicking off the menu list, tapping the Escape key, tabbing off the control, none of which worked.
There are no errors in the console in the browser’s Web Developer Tools.
I tested across Firefox, Chrome, Safari, Opera on macOS, and on Chrome on Android.