Which version of the game do you have? The latest is 1.2a which should solve the bug. 1.1 was definitely broken here, 1.2 may have shown you a repeat version. If you have 1.2a, try this sequence:
Go to the cabin, look at the boat, then the junk, then go to the house and look at Tetrine's luggage, then go back and look at the boat.
uh yeah, think i must have found another way to access the bug :(
i'm already in the house and i can't leave to check the cabin again. if i try to leave, rosemary says 'i can explore later, i'm pretty tired'. and checking the luggage just says 'that's tetrine's luggage', and that's it.
i will say i don't remember seeing 'junk' in the cabin. maybe that's triggering it?
i have a save file from a fair bit earlier, i'll try going back to that tomorrow. definitely want to see what happens in the story.
probably entirely redundant now, but i persisted with the old version. during the section where trying to go to the station says 'waiting for tetrine', you can go and spy again which leads to the softlock. but if you look at the boat first it's fine. just thought i report back on that in case it helps. but since you've updated, probably not :D
anyways, i finished! didn't realise how close to the end i was :D great stuff, i really liked it. love the way you composed scenes visually. gave me some inspiration for how i can approach some game design in the future. good luck with the jam!