This has been a concern for me for over 18 months but when in an Office application, you go File /Office Account , the About Application section shows a version but if you click the About Application button, the form that opens has a different version. The popup version is often not listed in the list of office versions https://learn.microsoft.com/en-gb/officeupdates/update-history-microsoft365-apps-by-date?redirectSourcePath=%252fen-us%252farticle%252fVersion-and-build-numbers-of-update-channel-releases-ae942449-1fca-4484-898b-a933ea23def7
Should I be concerned ? Especially now I have (since Jan 4) a calculation bug and VBA keeps needing to be recompiled.
Brian