Hi there, thank you for your report.
We are aware of players reporting this issue and are investigating.
While not confirmed as a solution, we have seen players report that making sure all characters that are progressing through the Ships of the Shipstealer Quest are caught up to your primary character may resolve the issue.
This is still an issue for me. I only play 1 character so I don't have any progress on my other characters in this quest. Is this still being worked on?