Slider tool does not work without a label when controlling brightness/color temp

[stinobook]

Bug description

entity slider tool (to control brightness or whatever) of a light does not work without a label

below code from your examples works until you remove the label in position/style or you put placement: none

To Reproduce

from examples:

                 - type: slider
                    descr: '#3 test slider'
                    position:
                      cx: 50
                      cy: 81
                      capture:
                        width: 90
                        height: 15
                      track:
                        width: 90
                        height: 4
                        radius: 1
                      thumb:
                        width: 5
                        height: 5
                        radius: 2.5
                      label:
                        # placement can be none, thumb, position (cx,cy)
                        placement: position
                        cx: 83
                        cy: 17
                    entity_index: 1
                    derived_entity:
                      input : '[[[ return state ]]]'
                      state: >
                        [[[
                          if (typeof(entity) === 'undefined') return;
                          if (typeof(state) === 'undefined') return;

                          var bri = Math.round(state / 2.55);
                          return (bri ? bri : '0');
                        ]]]
                      unit: >
                        [[[
                          if (typeof(state) === 'undefined') return undefined;
                          return '%';
                        ]]]
                    user_actions:
                      drag_action:
                        update_interval: 200          # Update every 200msec
                        haptic: selection
                        actions:
                          - action: call-service
                            service: light.turn_on
                            parameter: brightness_pct
                      tap_action:
                        haptic: light
                        actions:
                          - action: call-service
                            service: light.turn_on
                            parameter: brightness_pct
                    scale:
                      min: 1
                      max: 100
                      step: 1
                      steps: '[1,2,5,6,7,8,9,20]'
                      stepsnew:
                        - stop: 0
                          step: 1
                        - stop: 10
                          step: 5
                    styles:
                      label:
                        text-anchor: middle
                        font-size: 10em
                        font-weight: 600
                      track:
                        fill: url(#sak-light-color-temperature-gradient)
                        fill-opacity: 1
                        stroke-width: 0.1em
                        stroke: white
                      thumb:
                        stroke-width: 1.2em
                        stroke: var(--primary-background-color)
                        stroke-opacity: 1
                        fill: var(--primary-text-color)
                        fill-opacity: 0.8

Expected behavior

working slider. showing both current state and slideable to change it.

Additional context label can NOT be 'position label placement 'none' thumb works and position works.

(Optional): Suggested Solution

Any suggested solution to this bug.

[stinobook]

current workaround i found:

use this for style to make it invisible:

                          styles:
                            label:
                              font-size: 0em