I’m repeating myself: It is always the small things. I just had a very nice Zoom call with an employee of Atlassian. He showed me, that I’m a little dumb and Atlassian JIRA has an annoying UX issue.
TL;DR: You need to click Add before saving a new permission!

We have a filter we want to change the permission. so we click on the three dots:

After the click on Edit, we get a popup.

One can change the the permission, either by deleting an entry with the big X on the right:

Or – and this is the UX issue imho, by choosing something from the dropdown AND THEN CLICK ON ADD. The problem is, this is not obvious – at least not to me.

Because once I click on the Save button, a success message tells me everything is fine – although nothing was changed.
