When I hit the "c" shortcut to open the "+ New" button from the navbar and just after I hit the "s" key to open the "Switch to..." modal, then there will be a javascript error Dropdown element should be in a dropdown menu.

There should not be this error. The error is thrown because our code cannot focus the previous element. It means the previous focused element is lost when opening the switch-to modal. It is otherwise harmless.

It was found by Cypress end-to-end test.