Gutenberg Error when creating or editing posts

Today I went to create a new post on my site and received back the following:

TypeError: Cannot read property 'select' of undefined
    at https://localhost/wp-includes/js/dist/editor.min.js?ver=007:55:120501
    at n.value (https://localhost/wp-includes/js/dist/data.min.js?ver=007:1:14919)
    at new n (https://localhost/wp-includes/js/dist/data.min.js?ver=007:1:14614)
    at zf (https://localhost/wp-includes/js/dist/vendor/react-dom.min.js?ver=007:69:258)
    at Mf (https://localhost/wp-includes/js/dist/vendor/react-dom.min.js?ver=007:87:4)
    at ph (https://localhost/wp-includes/js/dist/vendor/react-dom.min.js?ver=007:98:474)
    at eg (https://localhost/wp-includes/js/dist/vendor/react-dom.min.js?ver=007:125:307)
    at fg (https://localhost/wp-includes/js/dist/vendor/react-dom.min.js?ver=007:126:168)
    at wc (https://localhost/wp-includes/js/dist/vendor/react-dom.min.js?ver=007:138:237)
    at gg (https://localhost/wp-includes/js/dist/vendor/react-dom.min.js?ver=007:135:160)

Upon a quick Google search I discovered other users have had this same exact problem in Gutenberg but all of their posts are marked “resolved” despite there being no resolution.

I can’t provide steps to reproduce this issue given I’ve never had it until today (only thing different today was updating the ‘Twenty’ themes).

The problem “fixed” itself when I installed the Classic Editor plugin, so this bug is specific to Gutenberg and the fact that other users are getting the same error means it is a bug (albeit likely affecting a small group of users). Something with react-dom.min.js seems to be the issue as I reinstalled WP 5.0.2 twice and received the same error (with all 3rd party plugins disabled).