[Closed] Translation Priorities not showing / can't filter

Background of the issue:
I added a translation priority to different pages and want to filter by this translation priority. I have many different translators from different countries, and they need to focus on the required pages. Link to a page where the issue can be seen: hidden link

Symptoms:
I expected to see a row or dropdown entry to filter for the priority, but instead, I got no filter.

Questions:
Why is the translation priority filter not showing?
How can I enable or fix the filter for translation priority?