Hmm... the icons should be added by default. You might be running into a bug with the compiler that will be fixed in the next release.
If you want to test this, You can try replacing the class-beans-compiler.php in lib/api/compiler with this file: https://github.com/christophherr/Beans/blob/fix/compiler-path/lib/api/compiler/class-beans-compiler.php
and then removing your js_enqueue_uikit_icons function
Thank you very much for this reply, Christoph. I will give this a try.