Existing World Loading Failure (70% Hang) Following Version 26.11 Update

Following the 26.11 update, I have encountered a critical bug where my primary survival world—which has over 200 days of progress. fails to load, consistently hanging at approximately 70% on the loading screen. While I was temporarily able to bypass this by duplicating the world, that workaround no longer functions, and the duplicated files now suffer from the same issue. This problem seems localized to my existing saved worlds, as I am still able to create and enter entirely new worlds without any errors. It appears the update may have corrupted the loading sequence or created a compatibility conflict with older save data, preventing me from accessing my long-term projects.