Whilst working on a document in the latest version of Illustrator, any subsequent saves after the initial first saves is not guaranteed to have saved. Instead I may find a temp file in the folder alongside the original version rather than the fresh updated document. This is the first time in any versions of Illustrator that I have experienced this and am extremely worried as to what other documents have supposedly been updated but haven't really?

Before you ask, yes, I did refresh my folders and also opened the illustrator file to only find that the changes made have not been implemented. The temp files did however have the changes on them and so after opening the temp files, I cleared the folder and saved a fresh Illustrator file, as per the attached screen capture of my waste bin.