Stranded Deep has been updated to version 1.13 today by Beam Team Games. You can find out the complete patch notes from here.
This patch solves the issue with Dumped/Lost Items. It was first released on PC and the patch should be available to download now on Playstation and Xbox consoles. You can read the details on this hotfix below, or take a look at the support forums.
Stranded Deep Update 1.13 Patch Notes
The hotfix for the Dumped/Lost Items trigger for the “Cleaning Up” issue is with PlayStation and Microsoft for approval. As with previous hotfixes, as soon as they’re approved they’ll be released so they may appear for different regions and systems at different times.
As a reminder this hotfix is only one of the triggers for this issue and the team are continuing to investigate others reported by the community. Unfortunately due to the nature of the bug, previously affected saves are not restored with this fix, but it is designed to prevent this trigger from causing the issue again. This fix should cover both items lost accidentally through the ground and items lost / intentionally dropped at sea.
Thank you to everyone who has reported their experience of this issue so far, this has greatly helped the team in tracking down this trigger quickly and is continuing to help with other triggers. They team also wishes to say thank you to the community for your understanding and support while they work on this.