LibreOffice Writer 7.5.1.2. Windows 10.
The top of the Navigator frame list has names that are a grey colour. The greyed frame names appeared after LibreOffice crashed and I restarted it in normal mode. The greyed frames were in the document before the crash. Hovering the mouse over the greyed names displays “hidden”. The “hidden” frames are not displayed in the document.
I did not deliberately “hide” any frames, which I don’t know how to do anyway.
What does “hidden” mean and how can I recover the frames?