Strange console error when enabling the fluidui widget with the update infusion library

Problem/Motivation

When enabling the fluidui module with the new infusion library installed, I see this strange error in the console log:

drupal.js?v=11.1.7:64 Uncaught TypeError: this.$el.children(...).drupalToolbarMenuHorizontal is not a function
    at r.renderHorizontal (MenuVisualView.js?v=11.1.7:37:46)
    at r.render (MenuVisualView.js?v=11.1.7:28:14)
    at r.initialize (MenuVisualView.js?v=11.1.7:20:14)
    at h.View (backbone.js:1340:21)
    at new r (backbone.js:2112:41)
    at toolbar.js?v=11.1.7:137:47
    at Array.forEach (<anonymous>)
    at Object.attach (toolbar.js?v=11.1.7:80:59)
    at drupal.js?v=11.1.7:166:24
    at Array.forEach (<anonymous>)

Not sure what's going on there but this both apples to the 3.0.x and 2.0.x branch.

Steps to reproduce

Install the latest Fluidui release and open your console log

Proposed resolution

Not at this point, needs to debug this

Remaining tasks

N/A

User interface changes

N/A

API changes

N/A

Data model changes

N/A