Bug: some texts disappeared when re-open pdfs

Problem:
I frequently use the functions of "edit PDF", adding text boxes, highlighting and reorganizing pages. When I did many changes to a document(?), Adobe always pop up an error message of "The document could not be saved. There was a problem reading this document (14)" when I tried to save the documents. Interestingly, this error message did not affect me saving the document, so I've been ignoring it for more than half a year. However, recently, when I reopen those saved documents, there are many text disappeared.

Actions taken:
I have tried different measures to solve this, including checking for updates, reinstalling adobe and running a preflight fixup to embed the fonts on the original pdf (Tools> Print Production> Preflight> Fixups). However, none of them worked and my work is now severely affected by this issue. I would really appreciate any advice to solve this problem.

P.S. The font I used in all my pdf documents are calibri, and my computer/adobe acrobat has this font embedded.