I wanted to check if a notebook was open and warn the user before copying the file to a repository. This isn't the exact code, but it demonstrates the issue:
TableForm[(Information[#, "WindowTitle"] &) /@ Notebooks]
Most of the notebooks appear correctly. But one notebook is being petulant and doesn't report the file name displayed in the title:
The hash like string appears in place of the filename doesn't match the filename in the Notebook and none of the properties can be accessed using "Information". I suspect it is related to OneDrive, but all the files are stored in folder linked to OneDrive. This is the only Notebook which has a result of this form.
Has anyone seen anything like this?
(Before i submit to the support staff at Wolfram)
"12.3.0 for Microsoft Windows (64-bit) (May 10, 2021)"