[BUG] bat preview shows only some lines of a file

[Nias26]

Describe the bug

When I complete with any command (less, bat, nvim, ...) the file preview shows only some lines;
but when I use fzf-tab-source the problem goes away.
I tried to see how fzf-tab-source code worked, but I didn't find anything helpful.

I can make sure:

• I am using the latest version of fzf-tab
• this is the minimal zshrc which can reproduce this bug
• fzf-tab is loaded after compinit
• fzf-tab is loaded after plugins which will wrap Tab, like junegunn/fzf/completion.zsh
• fzf-tab is loaded before zsh-autosuggestions, zsh-syntax-highlighting and fast-syntax-highlighting.

To Reproduce

Steps to reproduce the behavior:

1. Type 'less '
2. Press Tab
3. Select any text file
4. See error

Expected behavior

The complete preview of the text file.

Screenshots

A part of my .zshrc viewed with bat

The same file but on fzf-tab preview

my .lessfilter file

Environment:

• OS: Arch Linux
• zsh version: 5.9

Minimal zshrc

plugins=(
  git
  fzf
  history
  ripgrep
  sudo
  tmux
  fzf-tab
  zsh-autosuggestions
  zsh-syntax-highlighting
  colored-man-pages
)

# Plugins Configs
# fzf-tab
export FZF_DEFAULT_OPTS="--ansi"
FZF_TAB_GROUP_COLORS=(
    $'\033[94m' $'\033[32m' $'\033[33m' $'\033[35m' $'\033[31m' $'\033[38;5;27m' $'\033[36m' \
    $'\033[38;5;100m' $'\033[38;5;98m' $'\033[91m' $'\033[38;5;80m' $'\033[92m' \
    $'\033[38;5;214m' $'\033[38;5;165m' $'\033[38;5;124m' $'\033[38;5;120m'
)
zstyle ':fzf-tab:*' group-colors $FZF_TAB_GROUP_COLORS
# Change keybinds
zstyle ':fzf-tab:*' fzf-bindings 'alt-q:toggle' 
#Show dotfiles
setopt globdots
# disable sort when completing `git checkout`
zstyle ':completion:*:git-checkout:*' sort false
# set descriptions format to enable group support
zstyle ':completion:*:descriptions' format '[%d]'
# set list-colors to enable filename colorizing
zstyle ':completion:*' list-colors ${(s.:.)LS_COLORS}
# preview directory's content with exa when completing cd
zstyle ':fzf-tab:complete:cd:*' fzf-preview 'exa -1 --color=always $realpath'
# switch group using `,` and `.`
zstyle ':fzf-tab:*' switch-group ',' '.'
zstyle ':fzf-tab:complete:cd:*' fzf-preview 'exa -1 --color=always $realpath' # remember to use single quote here!!!
# give a preview of commandline arguments when completing `kill`
zstyle ':completion:*:*:*:*:processes' command "ps -u $USER -o pid,user,comm -w -w"
zstyle ':fzf-tab:complete:(kill|ps):argument-rest' fzf-preview \
  '[[ $group == "[process ID]" ]] && ps --pid=$word -o cmd --no-headers -w -w'
zstyle ':fzf-tab:complete:(kill|ps):argument-rest' fzf-flags --preview-window=down:3:wrap
zstyle ':fzf-tab:complete:systemctl-*:*' fzf-preview 'SYSTEMD_COLORS=1 systemctl status $word'
zstyle ':fzf-tab:complete:*:*' fzf-preview 'less ${(Q)realpath}'
export LESSOPEN='|~/.lessfilter %s'
zstyle ':fzf-tab:complete:*:options' fzf-preview 
zstyle ':fzf-tab:complete:*:argument-1' fzf-preview
zstyle ':fzf-tab:complete:(-command-|-parameter-|-brace-parameter-|export|unset|expand):*' \
	fzf-preview 'echo ${(P)word}'
# it is an example. you can change it
zstyle ':fzf-tab:complete:git-(add|diff|restore):*' fzf-preview \
	'git diff $word | delta'
zstyle ':fzf-tab:complete:git-log:*' fzf-preview \
	'git log --color=always $word'
zstyle ':fzf-tab:complete:git-help:*' fzf-preview \
	'git help $word | bat -plman --color=always'
zstyle ':fzf-tab:complete:git-show:*' fzf-preview \
	'case "$group" in
	"commit tag") git show --color=always $word ;;
	*) git show --color=always $word | delta ;;
	esac'
zstyle ':fzf-tab:complete:git-checkout:*' fzf-preview \
	'case "$group" in
	"modified file") git diff $word | delta ;;
	"recent commit object name") git show --color=always $word | delta ;;
	*) git log --color=always $word ;;
	esac'
zstyle ':fzf-tab:complete:tldr:argument-1' fzf-preview 'tldr --color always $word'
zstyle ':fzf-tab:complete:-command-:*' fzf-preview \
  '(out=$(tldr --color always "$word") 2>/dev/null && echo $out) || (out=$(MANWIDTH=$FZF_PREVIEW_COLUMNS man "$word") 2>/dev/null && echo $out) || (out=$(which "$word") && echo $out) || echo "${(P)word}"'