Space item labels displaying before being reset

[bustinbung]

I'm trying to make a space item that shows the icons for open apps next to the space. However, I get a flash of icons and then the label resets to a blank space. I tried copy-pasting code from this plugin, and it worked, but I'd like to use the code I wrote because I find it to be a bit more readable. I've attached the relevant files below, but if you need more information, I'd be happy to provide it.

spaces.sh (item)

source "$CONFIG_DIR/icons.sh"

sketchybar --add event window_change

sid=0
LENGTH=${#SPACE_ICONS[@]}
spaces=()

for i in "${!SPACE_ICONS[@]}"; do
    sid=$(($i+1))

    PAD_LEFT=2
    PAD_RIGHT=2
    if [[ $i == 0 ]]; then
        PAD_LEFT=0
    elif [[ $i == $(($LENGTH-1)) ]]; then
        PAD_RIGHT=0
    fi

    space=(
        associated_space=$sid

        padding_left=$PAD_LEFT
        padding_right=$PAD_RIGHT

        background.color="$WHITE"
        background.border_width=0
        background.corner_radius=5
        background.height=28

        icon="$sid"
        icon.font="$FONT:Regular:12.0"
        icon.color="$SPACE_ICON"
        icon.highlight_color="$SPACE_ICON_HIGHLIGHT"
        icon.highlight=off

        label="_"
        label.color="$SPACE_APP"
        label.highlight_color="$SPACE_APP_HIGHLIGHT"
        label.font="$FONT:Regular:12.0"

        script="$PLUGIN_DIR/space.sh"
    )

    sketchybar --add space space.$sid left                  \
               --set space.$sid "${space[@]}"
done

space.sh (plugin)

source "$CONFIG_DIR/icons.sh"
source "$CONFIG_DIR/colors.sh"
source "$CONFIG_DIR/plugins/icon_map.sh"

APP_FONT="app-font"

update() {
    sketchybar --set $NAME icon.highlight=$SELECTED     \
                           label.highlight=$SELECTED

    if $SELECTED; then
        sketchybar --set $NAME background.color="$SPACE_SELECTED"
    else
        sketchybar --set $NAME background.color="$SPACE"
    fi

    

    for ((i = 1; i <= SPACES_LENGTH; i++)); do
        sid=$i
        LABEL=""

        APPS=$(yabai -m query --windows --space $sid)
        APPS_LENGTH=$(jq '. | length' <<< $APPS)

        if ((LENGTH == -1)); then
            sketchybar --set $NAME label="_"    \
                       --set $NAME label.font="$FONT:Regular:12"
            continue
        fi

        for ((j = 0; j < APPS_LENGTH; j++)); do
            APP=$(jq '. | nth('$j')' <<< $APPS)

            if $(jq '."is-visible" == false' <<< $APP); then
                continue
            fi

            APP_NAME=$(echo $APP | jq '.app' | tr -d '"')
            APP_ICON=$(icon_map $APP_NAME)

            LABEL+="$APP_ICON"

            if ((j < APPS_LENGTH)); then
                LABEL+=" "
            fi
        done

        sketchybar --set $NAME label="$LABEL"   \
                   --set $NAME label.font="$APP_FONT:Regular:12.0"
    done
}

mouse_clicked() {
    yabai -m space --focus $SID
    sketchybar --trigger space_change
}

case "$SENDER" in
  "mouse.clicked") mouse_clicked ;;
  *) update ;;
esac

Query results:

> sketchybar --query space.1
{
	"name": "space.1",
	"type": "space",
	"geometry": {
		"drawing": "on",
		"position": "left",
		"associated_space_mask": 2,
		"associated_display_mask": 2,
		"ignore_association": "off",
		"y_offset": 0,
		"width": 0,
		"padding_left": 2,
		"padding_right": -1,
		"background": {
			"drawing": "on",
			"color": "0xff39465e",
			"border_color": "0x0",
			"border_width": 0,
			"height": 28,
			"corner_radius": 5,
			"padding_left": 0,
			"padding_right": 2,
			"y_offset": 0,
			"clip": 0.000000,
			"image": {
				"value": "(null)",
				"drawing": "off",
				"scale": 1.000000
			},
			"shadow": {
				"drawing": "off",
				"color": "0xff000000",
				"angle": 30,
				"distance": 5
			}
		}
	},
	"icon": {
		"value": "1",
		"drawing": "on",
		"highlight": "off",
		"color": "0xffffffff",
		"highlight_color": "0xff39465e",
		"padding_left": 8,
		"padding_right": 8,
		"y_offset": 0,
		"font": "FiraCode Nerd Font:Regular:12.00",
		"width": 0,
		"align": "left",
		"background": {
			"drawing": "off",
			"color": "0x0",
			"border_color": "0x0",
			"border_width": 0,
			"height": 0,
			"corner_radius": 0,
			"padding_left": 0,
			"padding_right": 0,
			"y_offset": 0,
			"clip": 0.000000,
			"image": {
				"value": "(null)",
				"drawing": "off",
				"scale": 1.000000
			},
			"shadow": {
				"drawing": "off",
				"color": "0xff000000",
				"angle": 30,
				"distance": 5
			}
		},
		"shadow": {
			"drawing": "off",
			"color": "0xff000000",
			"angle": 30,
			"distance": 5
		}
	},
	"label": {
		"value": "",
		"drawing": "off",
		"highlight": "off",
		"color": "0xff9ca2ae",
		"highlight_color": "0xff39465e",
		"padding_left": 5,
		"padding_right": 5,
		"y_offset": 0,
		"font": "app-font:Regular:12.00",
		"width": 0,
		"align": "left",
		"background": {
			"drawing": "off",
			"color": "0x0",
			"border_color": "0x0",
			"border_width": 0,
			"height": 0,
			"corner_radius": 0,
			"padding_left": 0,
			"padding_right": 0,
			"y_offset": 0,
			"clip": 0.000000,
			"image": {
				"value": "(null)",
				"drawing": "off",
				"scale": 1.000000
			},
			"shadow": {
				"drawing": "off",
				"color": "0xff000000",
				"angle": 30,
				"distance": 5
			}
		},
		"shadow": {
			"drawing": "off",
			"color": "0xff000000",
			"angle": 30,
			"distance": 5
		}
	},
	"scripting": {
		"script": "/Users/justin/.config/sketchybar/plugins/space.sh",
		"click_script": "(null)",
		"update_freq": 0,
		"update_mask": 131075,
		"updates": "on"
	},
	"bounding_rects": {
		"display-1": {
			"origin": [ 3.000000, 948.000000 ],
			"size": [ 22.000000, 34.000000 ]
		}
	}
}