since 2 days I monitor a strange behaviour when I open an existing NB. The command line on top (File, Edit,.....) disappears. (see Attachment --> left: Notebook A: no command line, right: Notebook B: command line).
Remark: If I open Notebook A from the command line in Notebook B then it works(?)
Many thanks! Gordon
A fix is being worked on for a future minor release.
My apologies for the inconvenience.