LO 6.4.5.2, Fedora 32, kernel 5.7.11, KDE Plasma desktop
I routinely use hidden text (through a dedicated character style) to hide from printing ancillary information, such as a header content different from the corresponding heading. The hidden sequence is a source for a field inserted somewhere else.
To be able to edit and proof read my document, Tools>Options>LibreOffice Writer>View, Hidden text is enabled in Display fields.
Yesterday, I had an unexplained crash of LO (see this question) which, after a series of mistakes, caused my user profile to be wiped out. I reconfigured it today and everything is apparently back to my preferences, but for hidden text display.
Whatever I do in Tools>Options or in the View menu (notably View Formatting Marks) has no effect.
There is no LO update between the crash and now, nor in the OS or desktop manager.
What have I disregarded?
PS: of course, if I modify the character style to remove the hidden attribute, the sequence becomes visible.