libinputの設定を直して3本指スクロールの挙動を制御したい

前提・実現したいこと

ubuntu19.04
libinput使ってます。
3本指スクロールでワークスペースの切り替えを行う際、
入力欄に履歴に残っている？文字や文章が反映されてしまいます。
例えるなら、Shellで↑ボタンを押すと今までのコマンドの履歴が見れる感じです。
それが入力欄(コードエディタやLINE)にそのまま、現れてしまうのです。

~/.config/libinput-gestures.conf

# Configuration file for libinput-gestures.
#
# The default configuration file exists at /etc/libinput-gestures.conf
# but a user can create a personal custom configuration file at
# ~/.config/libinput-gestures.conf.
#
# Lines starting with '#' and blank lines are ignored. Currently
# "gesture" and "device" configuration keywords are supported as
# described below. The keyword can optionally be appended with a ":" (to
# maintain compatibility with original format configuration files).
#
# Each gesture line has 3 [or 4] arguments separated by whitespace:
#
# action motion [finger_count] command
#
# where action and motion is either:
#     swipe up
#     swipe down
#     swipe left
#     swipe right
#     pinch in
#     pinch out
#
# command is the remainder of the line and is any valid shell command +
# arguments.
#
# finger_count is a single numeric digit and is optional (and is
# typically 3 or 4). If specified then the command is executed when
# exactly that number of fingers is used in the gesture. If not
# specified then the command is executed when that gesture is executed
# with any number of fingers. Gesture lines specified with finger_count
# have priority over the same gesture specified without any
# finger_count.
#
# Typically command will be xdotool, or wmctrl. See "man xdotool" for
# the many things you can action with that tool. Note that unfortunately
# xdotool does not work with native Wayland clients.

###############################################################################
# SWIPE GESTURES:
###############################################################################

# Note the default is an "internal" command that uses wmctrl to switch
# workspaces and, unlike xdotool, works on both Xorg and Wayland (via
# XWayland). It also can be configured for vertical and horizontal
# switching over tabular workspaces, as per the example below. You can
# also add "-w" to the internal command to allow wrapping workspaces.

# Move to next workspace (works for GNOME/KDE/etc on Wayland and Xorg)
# gesture swipe up	_internal ws_up

# NOTE ABOUT FINGER COUNT:
# The above command will configure this command for all fingers (i.e. 3
# for 4) but to configure it for 3 fingers only, change it to:
# gesture swipe up	3 _internal ws_up
# Then you can configure something else for 4 fingers or leave 4 fingers
# unconfigured. You can configure an explicit finger count like this for
# all example commands in this configuration file.
#
gesture swipe up xdotool key super+Page_Down

# Move to prev workspace (works for GNOME/KDE/etc on Wayland and Xorg)
# gesture swipe down	_internal ws_down
gesture swipe down	xdotool key super+Page_Up

# Browser go forward (works only for Xorg, and Xwayland clients)
gesture swipe left	xdotool key control+Tab

# Browser go back (works only for Xorg, and Xwayland clients)
gesture swipe right	xdotool key control+shift+Tab

# NOTE: If you don't use "natural" scrolling direction for your touchpad
# then you may want to swap the above default left/right and up/down
# configurations.

# Optional extended swipe gestures, e.g. for browser tab navigation:
#
# Jump to next open browser tab
# gesture swipe right_up xdotool key control+Tab
#
# Jump to previous open browser tab
# gesture swipe left_up xdotool key control+shift+Tab
#
# Close current browser tab
# gesture swipe left_down xdotool key control+w
#
# Reopen and jump to last closed browser tab
# gesture swipe right_down xdotool key control+shift+t

# Example of 8 static workspaces, e.g. using KDE virtual-desktops,
# arranged in 2 rows of 4 across using swipe up/down/left/right to
# navigate in fixed planes. Must match how you have configured your
# virtual desktops.
# gesture swipe up	_internal --col=2 ws_up
# gesture swipe down	_internal --col=2 ws_down
# gesture swipe left	_internal --row=4 ws_up
# gesture swipe right	_internal --row=4 ws_down

# Example virtual desktop switching for Ubuntu Unity/Compiz. The
# _internal command does not work for Compiz but you can explicitly
# configure the swipe commands to work for a Compiz virtual 2
# dimensional desktop as follows:
# gesture swipe up	xdotool key ctrl+alt+Up
# gesture swipe down	xdotool key ctrl+alt+Down
# gesture swipe left	xdotool key ctrl+alt+Left
# gesture swipe right	xdotool key ctrl+alt+Right

# Example to change audio volume:
# Note this only works on an Xorg desktop (not Wayland).
# gesture swipe up   xdotool key XF86AudioRaiseVolume
# gesture swipe down xdotool key XF86AudioLowerVolume

###############################################################################
# PINCH GESTURES:
###############################################################################

# GNOME SHELL open/close overview (works for GNOME on Xorg only)
gesture pinch in	xdotool key super+s
gesture pinch out	xdotool key super+s

# KDE Plasma open/close overview
# gesture pinch in	xdotool key ctrl+F9
# gesture pinch out	xdotool key ctrl+F9

# GNOME SHELL open/close overview (works for GNOME on Wayland and Xorg)
# Note since GNOME 3.24 on Wayland this is implemented natively so no
# real point configuring for Wayland.
# gesture pinch in dbus-send --session --type=method_call --dest=org.gnome.Shell /org/gnome/Shell org.gnome.Shell.Eval string:'Main.overview.toggle();'
# gesture pinch out dbus-send --session --type=method_call --dest=org.gnome.Shell /org/gnome/Shell org.gnome.Shell.Eval string:'Main.overview.toggle();'

# Optional extended pinch gestures:
# gesture pinch clockwise <whatever command>
# gesture pinch anticlockwise <whatever command>

###############################################################################
# This application normally determines your touchpad device
# automatically. Some users may have multiple touchpads but by default
# we use only the first one found. However, you can choose to specify
# the explicit device name to use. Run "libinput list-devices" to work
# out the name of your device (from the "Device:" field). Then add a
# device line specifying that name, e.g:
#
# device DLL0665:01 06CB:76AD Touchpad
#
# If the device name starts with a '/' then it is instead considered as
# the explicit device path although since device paths can change
# through reboots this is best to be a symlink. E.g. instead of specifying
# /dev/input/event12, use the corresponding full path link under
# /dev/input/by-path/*.
#
# You can choose to use ALL touchpad devices by setting the device name
# to "all". E.g. Do this if you have multiple touchpads which you want
# to use in parallel. This reduces performance slightly so only set this
# if you have to.
#
# device all

###############################################################################
# You can set a minimum travel distance threshold before swipe gestures
# are actioned using the swipe_threshold configuration command.
# Specify this value in dots. The default is 0.
# E.g. set it to 100 dots with "swipe_threshold 100".
# swipe_threshold 0