So this was a weird one and while I fixed it myself with "/reset shuttle", it still warranted a report.

https://imgur.com/nLFKDXf Compare the shuttle UI list to the actual stops on the map.

For some reason, the shuttle UI listed several stops with the wrong name. They're in the correct order for their actual name and the correct number of stops are displayed. Clicking on one of the misnamed stops to call a shuttle to it returns a lua error. I didn't screenshot the error prompt (sorry) but I remember it involving "folk-shuttle" and "UI". The crash sent me to the main menu. Upon opening my most recent autosave, the bug persisted and led to another crash. Loading again, I used "/reset shuttle" which fixed the shuttle stop list and allowed them to be clicked without a crash. Twenty hours later, the issue has not reappeared.