I recently reached out to Shipstation Support and was advised to post my issue here as feedback for the development team.
Since updating in early August, Shipstation Connect persistently resets my printing preferences. It also frequently prints to the wrong printer (ie. I select my Brother printer to print a packing slip, and Shipstation Connect sends the document to my label printer instead). It's very irritating for my staff and results in a waste of labels.
Shipstation Support attempted to troubleshoot these issues with me but ultimately there was no resolution. The agent said it had something to do with the update, but didn't have any suggestions to fix it.