Following the manual:
https://select2.org/configuration/defaults#nested-options
I should be able to do this:
$.fn.select2.defaults.set("ajax--delay", 250);
This does not work for me. I can set other defaults and they seem to work. I can set this delay on a per Select2 instance basic and it does work i.e. set a crazy high number and the select slows down.
Can anyone else confirm this?