Part of conversation suddenly Missing

Hi all,
Yesterday I noticed that almost half of a lengthy conversation I had with chatGPT is missing. To be clear i’m able to load the conversation itself, but around 20 of the last few messages seem to have suddenly disappeared.

When asking chatGPT if it remembers about the specific missing parts of the conversation, it does seem to recall them, but those parts juts don’t show up in the conversation history.
Has anyone else experienced this?