No way to add an amenity stop

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/no-way-to-add-an-amenity-stop/
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Clicking the add amenity stop for a route opens a data entry panel, but didn't actually add it into the route.