Menu bar disappears

Questions
,
1

Hello,

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

2

A fix is being worked on for a future minor release.

My apologies for the inconvenience.