Hey @BayanMA, and anyone following this thread — quick update: Our Engineering team has deployed a fix for this issue.
One important note: If you're still seeing missing content, chat history, or version history in your file, please open a ticket with our Technical Quality team so we can take a deeper look and arrange next steps.
You can do this via the Support Hub → click Start a chat → type "Report a bug", and include your impacted file by sharing it with support-share@figma.com with view access. This lets us reproduce and investigate.
Thanks for your report, and for your patience while we worked on a resolution.