@
taja - Calibre should start with the same panels showing as last time (you probably know that) - what happens if you quit with the Book Details hidden and then do a restart?
There's no preference setting as such - its controlled via the the following item in the gui.json file which is in the calibre configuration folder
Code:
"tag_browser_splitter_horizontal_state": [true, 200],
The first value should toggle between
true and
false
With calibre closed down you could try removing that item from gui.json and start/stop with tag browser showing/hidden - calibre will create a fresh entry for
tag_browser_splitter_horizontal_state
BR