How to start with preview window already minimised?

[faxotherapy]

I have set --preview 'glow -p -w 109 -s dark {}' --preview-window='bottom,66%,wrap' --bind 'ctrl-/:toggle-preview' for FZF_CTRL_T_OPTS. My problem is that fzf always starts with the preview window wide and large. Is it possible to minimise it at start?

[lime-desu]

excerpted from the man page on v39

--preview-window=[POSITION][,SIZE[%]][,border-BOR‐
      DER_OPT][,[no]wrap][,[no]follow][,[no]cycle][,[no]hidden][,+SCROLL[OFF‐
      SETS][/DENOM]][,~HEADER_LINES][,default][,<SIZE_THRESHOLD(ALTERNATIVE_LAY‐
      OUT)]

--preview-window=hidden

On v30 above
You can also adjust the preview on a certain threshold

--preview-window '<50(nohidden,border-bottom)'