Missing Knowledge Feedback modal in Employee Center

[ChristianR]

I am having an issue currently on my company's servicenow instance. When giving a negative rating on a knowledge article, triggering the Knowledge feedback task functionality, an empty modal pops up. In my out-of-the-box PDI, this is a simple feedback form, but this does not appear on my company's instance. The Knowledge Feedback Tasks are created as expected. I tested this on both the serviceportal and employee center (the goal is to migrate to the latter with as much out-of-the-box functionality as possible) but it works on neither on the company instance. The empty modal scales correctly when manually adding HTML

Digging in to the differences I found that on line 27 of the Knowledge Article Helpful widget, it calls a rootscope emit on sp.kb.feedback.openTaskPopup, which is listened to by the Knowledge Article Content widget, which enables a modal. This modal should be built using an ng-template, kb-feedback-task-modal, which was missing from the instance but present in the PDI, so I added it manually to the Knowledge Article content widget. But this does not seem to have solved the problem as the modal remains empty. Aside from this missing ng-template that I added, I see no differences between my PDI and my company's instance regarding the latest versions of these widgets. The PDI is on Tokyo and the company instance on San Diego. 

Is this a known issue? Any help would be appreciated.