Focus issue in ‘Select Elements to Manipulate…’ dialog

When selecting ‘Operate on Element…’ in the Behavior Editor the ‘Manipulate Elements’ dialog opens:

To select one or more elements, you must click on the ‘Choose…’ button, and then the ‘Select Elements to Manipulate…’ dialog opens on top.

Now, focus should be in the text field, so that you can write the name of the elements(s), but focus is somewhere else.