I ran the following command:
$ composer require 'drupal/webform:5.4-beta1'
Some of the components in the Extend section show updated version, while Webform (top one) still says 5.0-rc12.
My computed Twig does not update unless I page back/forward or submit. The checkbox for auto update is not visible.
I have all my twig files saved... I could just uninstall module and start over? But doing this on the production server probably is no good idea. I'm using Drupal 8.6.