I just updated our discourse instance to the most recent updates, and noticed when trying to create an invitation link that I could not select a group for the respondents to be included in. Here is the error from the console that was logged when I clicked the option.
Poking around a bit more I tried to add a flair to the group, which uses a similar dropdown. When I click the option no change happens.
Here is the error log from the dev tools console that is generated when I clicked the option:
Not sure if these two are related.